Finding the Third Proportional to 107,665.50 and 154,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   107,665.50 : 154,120.50 = 154,120.50 : x
2. Step 2: Convert to fraction form
   107,665.50/154,120.50 = 154,120.50/x
3. Step 3: Cross multiply
   107,665.50x = 154,120.50 × 154,120.50
4. Step 4: Simplify right side
   107,665.50x = 23,753,128,520.25
5. Step 5: Solve for x
   x = 23,753,128,520.25/107,665.50
6. Step 6: Final answer
   x = 220,619.68