Finding the Third Proportional to 331,870 and 724,004

Step by Step Solution

1. Step 1: Write the proportion equation
   331,870 : 724,004 = 724,004 : x
2. Step 2: Convert to fraction form
   331,870/724,004 = 724,004/x
3. Step 3: Cross multiply
   331,870x = 724,004 × 724,004
4. Step 4: Simplify right side
   331,870x = 524,181,792,016
5. Step 5: Solve for x
   x = 524,181,792,016/331,870
6. Step 6: Final answer
   x = 1,579,479.29