Finding the Third Proportional to 1,040.82 and 1,120.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.82 : 1,120.55 = 1,120.55 : x
2. Step 2: Convert to fraction form
   1,040.82/1,120.55 = 1,120.55/x
3. Step 3: Cross multiply
   1,040.82x = 1,120.55 × 1,120.55
4. Step 4: Simplify right side
   1,040.82x = 1,255,638.43
5. Step 5: Solve for x
   x = 1,255,638.43/1,040.82
6. Step 6: Final answer
   x = 1,206.40