State-run Coal India, CIL, has become the third most powerful Indian company with a total market capitalisation of 2, 09,671 crore rupees and is only lagging behind RIL and ONGC.The coal behemoth added another feather to its cap last week when it replaced IT giant Tata Consultancy Services to become the country's third most coveted firm.CIL added 7, 611 crore rupees to its valuation, which on Friday stood at 2, 09, 671. 57 crore rupees.According to market analysts, investors are optimistic about the stock and looking at the cash balance of the company it is likely that it may go for acquisitions either in the domestic space or overseas.