Finding the Third Proportional to 59,972.27 and 128,248.31

Step by Step Solution

1. Step 1: Write the proportion equation
   59,972.27 : 128,248.31 = 128,248.31 : x
2. Step 2: Convert to fraction form
   59,972.27/128,248.31 = 128,248.31/x
3. Step 3: Cross multiply
   59,972.27x = 128,248.31 × 128,248.31
4. Step 4: Simplify right side
   59,972.27x = 16,447,629,659.10
5. Step 5: Solve for x
   x = 16,447,629,659.10/59,972.27
6. Step 6: Final answer
   x = 274,253.90