Finding the Third Proportional to 518.44 and 1,123.78

Step by Step Solution

1. Step 1: Write the proportion equation
   518.44 : 1,123.78 = 1,123.78 : x
2. Step 2: Convert to fraction form
   518.44/1,123.78 = 1,123.78/x
3. Step 3: Cross multiply
   518.44x = 1,123.78 × 1,123.78
4. Step 4: Simplify right side
   518.44x = 1,262,884.30
5. Step 5: Solve for x
   x = 1,262,884.30/518.44
6. Step 6: Final answer
   x = 2,435.94