Finding the Third Proportional to 329,456 and 721,948

Step by Step Solution

1. Step 1: Write the proportion equation
   329,456 : 721,948 = 721,948 : x
2. Step 2: Convert to fraction form
   329,456/721,948 = 721,948/x
3. Step 3: Cross multiply
   329,456x = 721,948 × 721,948
4. Step 4: Simplify right side
   329,456x = 521,208,914,704
5. Step 5: Solve for x
   x = 521,208,914,704/329,456
6. Step 6: Final answer
   x = 1,582,028.90