Finding the Third Proportional to 426,987 and 654,952.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,987 : 654,952.50 = 654,952.50 : x
2. Step 2: Convert to fraction form
   426,987/654,952.50 = 654,952.50/x
3. Step 3: Cross multiply
   426,987x = 654,952.50 × 654,952.50
4. Step 4: Simplify right side
   426,987x = 428,962,777,256.25
5. Step 5: Solve for x
   x = 428,962,777,256.25/426,987
6. Step 6: Final answer
   x = 1,004,627.25