Psh, I believed 3 million, so I'm sadly dissapointed in all of you!
Good example... if you only have 75k, you can't make the building that you wanted. But you can make a smaller building, with less rooms, less features...!
But I think that point is moot... we're at 1,950,000 now, and 35,000 from other sources, so only 15,000 left with still 7 hours to go.
It's more like the building will lack some walls, and there's a pretty good chance it will collapse on itself since they didn't give proper stutting to the second floor.