Finding the Third Proportional to 443,238 and 649,132.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,238 : 649,132.50 = 649,132.50 : x
2. Step 2: Convert to fraction form
   443,238/649,132.50 = 649,132.50/x
3. Step 3: Cross multiply
   443,238x = 649,132.50 × 649,132.50
4. Step 4: Simplify right side
   443,238x = 421,373,002,556.25
5. Step 5: Solve for x
   x = 421,373,002,556.25/443,238
6. Step 6: Final answer
   x = 950,669.85