Finding the Third Proportional to 59,418 and 129,082.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,418 : 129,082.50 = 129,082.50 : x
2. Step 2: Convert to fraction form
   59,418/129,082.50 = 129,082.50/x
3. Step 3: Cross multiply
   59,418x = 129,082.50 × 129,082.50
4. Step 4: Simplify right side
   59,418x = 16,662,291,806.25
5. Step 5: Solve for x
   x = 16,662,291,806.25/59,418
6. Step 6: Final answer
   x = 280,424.99