Finding the Third Proportional to 518,472 and 799,820

Step by Step Solution

1. Step 1: Write the proportion equation
   518,472 : 799,820 = 799,820 : x
2. Step 2: Convert to fraction form
   518,472/799,820 = 799,820/x
3. Step 3: Cross multiply
   518,472x = 799,820 × 799,820
4. Step 4: Simplify right side
   518,472x = 639,712,032,400
5. Step 5: Solve for x
   x = 639,712,032,400/518,472
6. Step 6: Final answer
   x = 1,233,841.04