Finding the Third Proportional to 59,471.72 and 128,227.64

Step by Step Solution

1. Step 1: Write the proportion equation
   59,471.72 : 128,227.64 = 128,227.64 : x
2. Step 2: Convert to fraction form
   59,471.72/128,227.64 = 128,227.64/x
3. Step 3: Cross multiply
   59,471.72x = 128,227.64 × 128,227.64
4. Step 4: Simplify right side
   59,471.72x = 16,442,327,820.25
5. Step 5: Solve for x
   x = 16,442,327,820.25/59,471.72
6. Step 6: Final answer
   x = 276,473.06