Finding the Third Proportional to 1,255.50 and 2,311.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255.50 : 2,311.03 = 2,311.03 : x
2. Step 2: Convert to fraction form
   1,255.50/2,311.03 = 2,311.03/x
3. Step 3: Cross multiply
   1,255.50x = 2,311.03 × 2,311.03
4. Step 4: Simplify right side
   1,255.50x = 5,340,865.44
5. Step 5: Solve for x
   x = 5,340,865.44/1,255.50
6. Step 6: Final answer
   x = 4,253.97