Finding the Third Proportional to 54,417.63 and 84,089.13

Step by Step Solution

1. Step 1: Write the proportion equation
   54,417.63 : 84,089.13 = 84,089.13 : x
2. Step 2: Convert to fraction form
   54,417.63/84,089.13 = 84,089.13/x
3. Step 3: Cross multiply
   54,417.63x = 84,089.13 × 84,089.13
4. Step 4: Simplify right side
   54,417.63x = 7,070,980,943.27
5. Step 5: Solve for x
   x = 7,070,980,943.27/54,417.63
6. Step 6: Final answer
   x = 129,939.17