Finding the Third Proportional to 56,899 and 81,959.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,899 : 81,959.50 = 81,959.50 : x
2. Step 2: Convert to fraction form
   56,899/81,959.50 = 81,959.50/x
3. Step 3: Cross multiply
   56,899x = 81,959.50 × 81,959.50
4. Step 4: Simplify right side
   56,899x = 6,717,359,640.25
5. Step 5: Solve for x
   x = 6,717,359,640.25/56,899
6. Step 6: Final answer
   x = 118,057.60