Explanation:

- According to the PWC World2050 report, China is projected to be the largest economy in 2050.

- The report predicts that India will be the second largest economy, surpassing the United States, thanks to its rapid economic growth and population size.

- The United States is expected to remain one of the top economies, but will shift to third place.

- Indonesia is seen to rise significantly in the economic ranks but not in the top two.

- Russia is predicted to maintain a solid position but remains below the top two economies.

- The UK is also not expected to be among the top two economies by 2050.