Finding the Third Proportional to 231,391.50 and 349,554

Step by Step Solution

1. Step 1: Write the proportion equation
   231,391.50 : 349,554 = 349,554 : x
2. Step 2: Convert to fraction form
   231,391.50/349,554 = 349,554/x
3. Step 3: Cross multiply
   231,391.50x = 349,554 × 349,554
4. Step 4: Simplify right side
   231,391.50x = 122,187,998,916
5. Step 5: Solve for x
   x = 122,187,998,916/231,391.50
6. Step 6: Final answer
   x = 528,057.42