What is the third largest river in the world?

The length of the Yangtze River is 6,236 km or 3,876 miles. It is the longest river of China and third longest river of the world.Source: S. Liu, P. Lu, D. Liu, P. Jin, W. Wang, Pinpointing the sources and measuring the lengths of the principal rivers of the world, International Journal of Digital Earth, Volume 2, Issue 1 March 2009 , pages 80 - 87,DOI: 10.1080/17538940902746082ce