Finding the Third Proportional to 59,158.13 and 128,296.69

Step by Step Solution

1. Step 1: Write the proportion equation
   59,158.13 : 128,296.69 = 128,296.69 : x
2. Step 2: Convert to fraction form
   59,158.13/128,296.69 = 128,296.69/x
3. Step 3: Cross multiply
   59,158.13x = 128,296.69 × 128,296.69
4. Step 4: Simplify right side
   59,158.13x = 16,460,040,023.47
5. Step 5: Solve for x
   x = 16,460,040,023.47/59,158.13
6. Step 6: Final answer
   x = 278,238.03