The budget of Skyfall was some $200 000 000, so they profited a massive $900 000 000.
I don't think it's that easy There's the production and post-production fees and stuff; I don't know exactly how it works but I remember that the movie must earn at least 1.5x more than was the budget (like $300 000 000 movie must earn $450 000 000 to be able to pay to all prod. companies etc.)