Finding the Third Proportional to 54,160.50 and 83,699.25

Step by Step Solution

1. Step 1: Write the proportion equation
   54,160.50 : 83,699.25 = 83,699.25 : x
2. Step 2: Convert to fraction form
   54,160.50/83,699.25 = 83,699.25/x
3. Step 3: Cross multiply
   54,160.50x = 83,699.25 × 83,699.25
4. Step 4: Simplify right side
   54,160.50x = 7,005,564,450.56
5. Step 5: Solve for x
   x = 7,005,564,450.56/54,160.50
6. Step 6: Final answer
   x = 129,348.22