Finding the Third Proportional to 1,123.88 and 2,455.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.88 : 2,455.31 = 2,455.31 : x
2. Step 2: Convert to fraction form
   1,123.88/2,455.31 = 2,455.31/x
3. Step 3: Cross multiply
   1,123.88x = 2,455.31 × 2,455.31
4. Step 4: Simplify right side
   1,123.88x = 6,028,559.47
5. Step 5: Solve for x
   x = 6,028,559.47/1,123.88
6. Step 6: Final answer
   x = 5,364.08