Finding the Third Proportional to 486,674 and 651,002

Step by Step Solution

1. Step 1: Write the proportion equation
   486,674 : 651,002 = 651,002 : x
2. Step 2: Convert to fraction form
   486,674/651,002 = 651,002/x
3. Step 3: Cross multiply
   486,674x = 651,002 × 651,002
4. Step 4: Simplify right side
   486,674x = 423,803,604,004
5. Step 5: Solve for x
   x = 423,803,604,004/486,674
6. Step 6: Final answer
   x = 870,816.20