Finding the Third Proportional to 59,391.38 and 123,679.88

Step by Step Solution

1. Step 1: Write the proportion equation
   59,391.38 : 123,679.88 = 123,679.88 : x
2. Step 2: Convert to fraction form
   59,391.38/123,679.88 = 123,679.88/x
3. Step 3: Cross multiply
   59,391.38x = 123,679.88 × 123,679.88
4. Step 4: Simplify right side
   59,391.38x = 15,296,711,480.02
5. Step 5: Solve for x
   x = 15,296,711,480.02/59,391.38
6. Step 6: Final answer
   x = 257,557.79