Finding the Third Proportional to 329,442 and 719,298

Step by Step Solution

1. Step 1: Write the proportion equation
   329,442 : 719,298 = 719,298 : x
2. Step 2: Convert to fraction form
   329,442/719,298 = 719,298/x
3. Step 3: Cross multiply
   329,442x = 719,298 × 719,298
4. Step 4: Simplify right side
   329,442x = 517,389,612,804
5. Step 5: Solve for x
   x = 517,389,612,804/329,442
6. Step 6: Final answer
   x = 1,570,502.89