ATLANTA — The Mets’ third baseman of the future is on the way to help in the present.

Brett Baty, the organization’s No. 2 prospect, will be added to the major league roster Wednesday, according to an industry source, as the Mets look for an answer at depleted third base.

The Mets’ top pick in the 2019 draft, the left-handed swinging Baty produced big numbers this season for Double-A Binghamton before a recent promotion to Triple-A Syracuse. Overall the 22-year-old owns a .315/.410/.533 slash line with 19 homers and 60 RBIs in 95 games this season.

Baty’s arrival is expected to coincide with Eduardo Escobar’s placement on the injured list with a left-side strain. Earlier this week the Mets’ other option at third base, Luis Guillorme, was diagnosed with a left groin strain that is expected to cost him four to six weeks on the IL.

Escobar was scratched from Tuesday’s starting lineup against the Braves and available in a limited capacity off the bench.

The Post reported this week that team officials had not ruled out promoting Baty after Guillorme’s injury. But the Mets didn’t officially decide on the move until watching Escobar play Monday.

“We thought it was headed in the other direction, but today kind of showed where it might not be,” manager Buck Showalter said.

Showalter did not want to comment on Baty’s impending arrival, but the manager is familiar with Baty from spring training this season. If the Mets have any concerns about Baty it’s his defense — he has committed 15 errors in 72 games at third base this season.

Baty left an impression on Mets players during the spring.

“He did really well and showed a lot of big-time power and obviously he has been playing really well in Double-A and he just got promoted to Triple-A,” Brandon Nimmo said. “But he was doing real well in Double-A over a pretty good span of games. Obviously that is great. Double-A has a lot of similarities to the big leagues as far as talent goes.”

Nimmo, a Mets first-round draft pick himself, said he expects to speak with Baty about expectations upon the rookie’s arrival. Nimmo’s message?

“We don’t expect you to be a savior of this team or anything,” Nimmo said. “Just play the game, have fun, enjoy this, and if you happen to get some hits while you are here, great. But we are just saying, ‘You have done real well where you are at, there is an opportunity here. Don’t feel like you have to carry the team.’ I will talk to him about that. I am not going to throw any expectations on him. It honestly doesn’t matter if you are a first-round pick at this point.”

Nimmo said an injection of youth into the heat of a pennant race can be invigorating for the team.

“We haven’t had too many guys as far as straight-up rookies coming up, so it will be fun,” Nimmo said. “We had a couple of injuries unfortunately, and he’s getting an opportunity to step in.”