Finding the Third Proportional to 1,123.31 and 2,144.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.31 : 2,144.53 = 2,144.53 : x
2. Step 2: Convert to fraction form
   1,123.31/2,144.53 = 2,144.53/x
3. Step 3: Cross multiply
   1,123.31x = 2,144.53 × 2,144.53
4. Step 4: Simplify right side
   1,123.31x = 4,599,014.28
5. Step 5: Solve for x
   x = 4,599,014.28/1,123.31
6. Step 6: Final answer
   x = 4,094.15