Finding the Third Proportional to 329,715 and 718,476.75

Step by Step Solution

1. Step 1: Write the proportion equation
   329,715 : 718,476.75 = 718,476.75 : x
2. Step 2: Convert to fraction form
   329,715/718,476.75 = 718,476.75/x
3. Step 3: Cross multiply
   329,715x = 718,476.75 × 718,476.75
4. Step 4: Simplify right side
   329,715x = 516,208,840,290.56
5. Step 5: Solve for x
   x = 516,208,840,290.56/329,715
6. Step 6: Final answer
   x = 1,565,621.34