Media-entertainment giant News Corp says its most recent quarterly profit more than doubled to $US820 million, led by strong growth in its Fox television and cable operations. The results were also boosted by a gain on the sale of its investment in Mexican satellite entity Innova, which reaped $US206 million ($A266 million). The New York-based company, formerly headquartered in Australia and headed by Rupert Murdoch, says net income in the third fiscal quarter to March 31 amounted to 26 cents a share. Analysts had expected on average a profit of 20 cents per share excluding special items.