Finding the Third Proportional to 486,012 and 654,265.50

Step by Step Solution

1. Step 1: Write the proportion equation
   486,012 : 654,265.50 = 654,265.50 : x
2. Step 2: Convert to fraction form
   486,012/654,265.50 = 654,265.50/x
3. Step 3: Cross multiply
   486,012x = 654,265.50 × 654,265.50
4. Step 4: Simplify right side
   486,012x = 428,063,344,490.25
5. Step 5: Solve for x
   x = 428,063,344,490.25/486,012
6. Step 6: Final answer
   x = 880,767.03