Finding the Third Proportional to 147,939 and 323,499

Step by Step Solution

1. Step 1: Write the proportion equation
   147,939 : 323,499 = 323,499 : x
2. Step 2: Convert to fraction form
   147,939/323,499 = 323,499/x
3. Step 3: Cross multiply
   147,939x = 323,499 × 323,499
4. Step 4: Simplify right side
   147,939x = 104,651,603,001
5. Step 5: Solve for x
   x = 104,651,603,001/147,939
6. Step 6: Final answer
   x = 707,396.99