Finding the Third Proportional to 1,110.27 and 2,391.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,110.27 : 2,391.40 = 2,391.40 : x
2. Step 2: Convert to fraction form
   1,110.27/2,391.40 = 2,391.40/x
3. Step 3: Cross multiply
   1,110.27x = 2,391.40 × 2,391.40
4. Step 4: Simplify right side
   1,110.27x = 5,718,786.49
5. Step 5: Solve for x
   x = 5,718,786.49/1,110.27
6. Step 6: Final answer
   x = 5,150.81