Finding the Third Proportional to 440,778 and 654,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   440,778 : 654,685.50 = 654,685.50 : x
2. Step 2: Convert to fraction form
   440,778/654,685.50 = 654,685.50/x
3. Step 3: Cross multiply
   440,778x = 654,685.50 × 654,685.50
4. Step 4: Simplify right side
   440,778x = 428,613,103,910.25
5. Step 5: Solve for x
   x = 428,613,103,910.25/440,778
6. Step 6: Final answer
   x = 972,401.31