Finding the Third Proportional to 518,109.75 and 799,308

Step by Step Solution

1. Step 1: Write the proportion equation
   518,109.75 : 799,308 = 799,308 : x
2. Step 2: Convert to fraction form
   518,109.75/799,308 = 799,308/x
3. Step 3: Cross multiply
   518,109.75x = 799,308 × 799,308
4. Step 4: Simplify right side
   518,109.75x = 638,893,278,864
5. Step 5: Solve for x
   x = 638,893,278,864/518,109.75
6. Step 6: Final answer
   x = 1,233,123.44