The crew called in extra hands to raise the beam, first setting it on cleats nailed to the walls at each end.
Then, using a bottle jack, they forced it up into the slot and supported it on temporary wood posts.
Square hollow-steel posts standing on the slab foundation and welded to the beam provide permanent support.
New joist hangers completed the installation.
So, despite 1x3 furring crossing the 2x8 ceiling joists, the beam remained 1/4 inch proud of the surface.
Beam sitting 1/4 inch proud of the surface
Additional mesh and joint compound created a smooth finished ceiling.