Finding the Third Proportional to 518,100 and 799,261.50

Step by Step Solution

1. Step 1: Write the proportion equation
   518,100 : 799,261.50 = 799,261.50 : x
2. Step 2: Convert to fraction form
   518,100/799,261.50 = 799,261.50/x
3. Step 3: Cross multiply
   518,100x = 799,261.50 × 799,261.50
4. Step 4: Simplify right side
   518,100x = 638,818,945,382.25
5. Step 5: Solve for x
   x = 638,818,945,382.25/518,100
6. Step 6: Final answer
   x = 1,233,003.18