Finding the Third Proportional to 309,055,044 and 654,956,664

Step by Step Solution

1. Step 1: Write the proportion equation
   309,055,044 : 654,956,664 = 654,956,664 : x
2. Step 2: Convert to fraction form
   309,055,044/654,956,664 = 654,956,664/x
3. Step 3: Cross multiply
   309,055,044x = 654,956,664 × 654,956,664
4. Step 4: Simplify right side
   309,055,044x = 428,968,231,718,008,896
5. Step 5: Solve for x
   x = 428,968,231,718,008,896/309,055,044
6. Step 6: Final answer
   x = 1,387,999,452.03