Finding the Third Proportional to 331,605 and 710,527.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,605 : 710,527.50 = 710,527.50 : x
2. Step 2: Convert to fraction form
   331,605/710,527.50 = 710,527.50/x
3. Step 3: Cross multiply
   331,605x = 710,527.50 × 710,527.50
4. Step 4: Simplify right side
   331,605x = 504,849,328,256.25
5. Step 5: Solve for x
   x = 504,849,328,256.25/331,605
6. Step 6: Final answer
   x = 1,522,441.85