Finding the Third Proportional to 335,046.50 and 518,123

Step by Step Solution

1. Step 1: Write the proportion equation
   335,046.50 : 518,123 = 518,123 : x
2. Step 2: Convert to fraction form
   335,046.50/518,123 = 518,123/x
3. Step 3: Cross multiply
   335,046.50x = 518,123 × 518,123
4. Step 4: Simplify right side
   335,046.50x = 268,451,443,129
5. Step 5: Solve for x
   x = 268,451,443,129/335,046.50
6. Step 6: Final answer
   x = 801,236.38