Finding the Third Proportional to 129,082.50 and 279,610

Step by Step Solution

1. Step 1: Write the proportion equation
   129,082.50 : 279,610 = 279,610 : x
2. Step 2: Convert to fraction form
   129,082.50/279,610 = 279,610/x
3. Step 3: Cross multiply
   129,082.50x = 279,610 × 279,610
4. Step 4: Simplify right side
   129,082.50x = 78,181,752,100
5. Step 5: Solve for x
   x = 78,181,752,100/129,082.50
6. Step 6: Final answer
   x = 605,672.74