Finding the Third Proportional to 391,002 and 851,988

Step by Step Solution

1. Step 1: Write the proportion equation
   391,002 : 851,988 = 851,988 : x
2. Step 2: Convert to fraction form
   391,002/851,988 = 851,988/x
3. Step 3: Cross multiply
   391,002x = 851,988 × 851,988
4. Step 4: Simplify right side
   391,002x = 725,883,552,144
5. Step 5: Solve for x
   x = 725,883,552,144/391,002
6. Step 6: Final answer
   x = 1,856,470.18