Finding the Third Proportional to 331,870 and 728,252.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,870 : 728,252.50 = 728,252.50 : x
2. Step 2: Convert to fraction form
   331,870/728,252.50 = 728,252.50/x
3. Step 3: Cross multiply
   331,870x = 728,252.50 × 728,252.50
4. Step 4: Simplify right side
   331,870x = 530,351,703,756.25
5. Step 5: Solve for x
   x = 530,351,703,756.25/331,870
6. Step 6: Final answer
   x = 1,598,070.64