Finding the Third Proportional to 639,531 and 923,940

Step by Step Solution

1. Step 1: Write the proportion equation
   639,531 : 923,940 = 923,940 : x
2. Step 2: Convert to fraction form
   639,531/923,940 = 923,940/x
3. Step 3: Cross multiply
   639,531x = 923,940 × 923,940
4. Step 4: Simplify right side
   639,531x = 853,665,123,600
5. Step 5: Solve for x
   x = 853,665,123,600/639,531
6. Step 6: Final answer
   x = 1,334,829.94