Finding the Third Proportional to 53,428.50 and 83,058.75

Step by Step Solution

1. Step 1: Write the proportion equation
   53,428.50 : 83,058.75 = 83,058.75 : x
2. Step 2: Convert to fraction form
   53,428.50/83,058.75 = 83,058.75/x
3. Step 3: Cross multiply
   53,428.50x = 83,058.75 × 83,058.75
4. Step 4: Simplify right side
   53,428.50x = 6,898,755,951.56
5. Step 5: Solve for x
   x = 6,898,755,951.56/53,428.50
6. Step 6: Final answer
   x = 129,121.27