Finding the Third Proportional to 521,755,878 and 1,137,261,066

Step by Step Solution

1. Step 1: Write the proportion equation
   521,755,878 : 1,137,261,066 = 1,137,261,066 : x
2. Step 2: Convert to fraction form
   521,755,878/1,137,261,066 = 1,137,261,066/x
3. Step 3: Cross multiply
   521,755,878x = 1,137,261,066 × 1,137,261,066
4. Step 4: Simplify right side
   521,755,878x = 1,293,362,732,239,456,256
5. Step 5: Solve for x
   x = 1,293,362,732,239,456,256/521,755,878
6. Step 6: Final answer
   x = 2,478,865,666.44