Finding the Third Proportional to 2,291.20 and 5,020.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.20 : 5,020.31 = 5,020.31 : x
2. Step 2: Convert to fraction form
   2,291.20/5,020.31 = 5,020.31/x
3. Step 3: Cross multiply
   2,291.20x = 5,020.31 × 5,020.31
4. Step 4: Simplify right side
   2,291.20x = 25,203,537.60
5. Step 5: Solve for x
   x = 25,203,537.60/2,291.20
6. Step 6: Final answer
   x = 11,000.13