Finding the Third Proportional to 60,889.50 and 91,086.75

Step by Step Solution

1. Step 1: Write the proportion equation
   60,889.50 : 91,086.75 = 91,086.75 : x
2. Step 2: Convert to fraction form
   60,889.50/91,086.75 = 91,086.75/x
3. Step 3: Cross multiply
   60,889.50x = 91,086.75 × 91,086.75
4. Step 4: Simplify right side
   60,889.50x = 8,296,796,025.56
5. Step 5: Solve for x
   x = 8,296,796,025.56/60,889.50
6. Step 6: Final answer
   x = 136,259.88