Finding the Third Proportional to 309,658.50 and 452,538

Step by Step Solution

1. Step 1: Write the proportion equation
   309,658.50 : 452,538 = 452,538 : x
2. Step 2: Convert to fraction form
   309,658.50/452,538 = 452,538/x
3. Step 3: Cross multiply
   309,658.50x = 452,538 × 452,538
4. Step 4: Simplify right side
   309,658.50x = 204,790,641,444
5. Step 5: Solve for x
   x = 204,790,641,444/309,658.50
6. Step 6: Final answer
   x = 661,343.52