Avatar: The Way of Water is now the third-biggest grossing movie of all time. A little over two months after its theatrical debut, James Cameron’s much-delayed sequel has now overtaken his own 1997 disaster romance film Titanic. At the time of writing, Avatar 2 has generated $2.243 billion (about Rs. 18,550 crore) at the worldwide box office — compared to the $2.242 billion (about Rs. 18,540 crore) made by Titanic, which recently got a 4K…