Finding the Third Proportional to 1,120.55 and 1,223.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.55 : 1,223.07 = 1,223.07 : x
2. Step 2: Convert to fraction form
   1,120.55/1,223.07 = 1,223.07/x
3. Step 3: Cross multiply
   1,120.55x = 1,223.07 × 1,223.07
4. Step 4: Simplify right side
   1,120.55x = 1,495,896.21
5. Step 5: Solve for x
   x = 1,495,896.21/1,120.55
6. Step 6: Final answer
   x = 1,334.96