Finding the Third Proportional to 407,841,338 and 623,465,499

Step by Step Solution

1. Step 1: Write the proportion equation
   407,841,338 : 623,465,499 = 623,465,499 : x
2. Step 2: Convert to fraction form
   407,841,338/623,465,499 = 623,465,499/x
3. Step 3: Cross multiply
   407,841,338x = 623,465,499 × 623,465,499
4. Step 4: Simplify right side
   407,841,338x = 388,709,228,443,318,976
5. Step 5: Solve for x
   x = 388,709,228,443,318,976/407,841,338
6. Step 6: Final answer
   x = 953,089,332.12