You're in luck then. You could turn it on its side and move it through a doorway. If it's going to take up half of your garage, you could always build a new garage. We commandeered the old garage area for our big tank and had to build a new garage.
Wide, tall tanks will not fit through standard doorways. You need sliding doors, double doors or garage doors to move a wide, tall tank in. Probably the main reason many large tanks are in garages and not in houses.
Our doorways are 35" wide. There is no way we could squeeze a 36" (wide/tall) tank through a door. We moved our 72" x 36" x 36" sump tank into the future equipment room before we put the walls in...