Finding the Third Proportional to 329,170.50 and 718,659

Step by Step Solution

1. Step 1: Write the proportion equation
   329,170.50 : 718,659 = 718,659 : x
2. Step 2: Convert to fraction form
   329,170.50/718,659 = 718,659/x
3. Step 3: Cross multiply
   329,170.50x = 718,659 × 718,659
4. Step 4: Simplify right side
   329,170.50x = 516,470,758,281
5. Step 5: Solve for x
   x = 516,470,758,281/329,170.50
6. Step 6: Final answer
   x = 1,569,006.82