Finding the Third Proportional to 59,418.75 and 89,139.75

Step by Step Solution

1. Step 1: Write the proportion equation
   59,418.75 : 89,139.75 = 89,139.75 : x
2. Step 2: Convert to fraction form
   59,418.75/89,139.75 = 89,139.75/x
3. Step 3: Cross multiply
   59,418.75x = 89,139.75 × 89,139.75
4. Step 4: Simplify right side
   59,418.75x = 7,945,895,030.06
5. Step 5: Solve for x
   x = 7,945,895,030.06/59,418.75
6. Step 6: Final answer
   x = 133,727.06