Finding the Third Proportional to 56,909 and 81,973.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,909 : 81,973.50 = 81,973.50 : x
2. Step 2: Convert to fraction form
   56,909/81,973.50 = 81,973.50/x
3. Step 3: Cross multiply
   56,909x = 81,973.50 × 81,973.50
4. Step 4: Simplify right side
   56,909x = 6,719,654,702.25
5. Step 5: Solve for x
   x = 6,719,654,702.25/56,909
6. Step 6: Final answer
   x = 118,077.19