Finding the Third Proportional to 109,505.50 and 121,025.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,505.50 : 121,025.50 = 121,025.50 : x
2. Step 2: Convert to fraction form
   109,505.50/121,025.50 = 121,025.50/x
3. Step 3: Cross multiply
   109,505.50x = 121,025.50 × 121,025.50
4. Step 4: Simplify right side
   109,505.50x = 14,647,171,650.25
5. Step 5: Solve for x
   x = 14,647,171,650.25/109,505.50
6. Step 6: Final answer
   x = 133,757.41