Finding the Third Proportional to 168,216.75 and 359,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   168,216.75 : 359,761.50 = 359,761.50 : x
2. Step 2: Convert to fraction form
   168,216.75/359,761.50 = 359,761.50/x
3. Step 3: Cross multiply
   168,216.75x = 359,761.50 × 359,761.50
4. Step 4: Simplify right side
   168,216.75x = 129,428,336,882.25
5. Step 5: Solve for x
   x = 129,428,336,882.25/168,216.75
6. Step 6: Final answer
   x = 769,414.09