Finding the Third Proportional to 2,114.44 and 5,120.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.44 : 5,120.72 = 5,120.72 : x
2. Step 2: Convert to fraction form
   2,114.44/5,120.72 = 5,120.72/x
3. Step 3: Cross multiply
   2,114.44x = 5,120.72 × 5,120.72
4. Step 4: Simplify right side
   2,114.44x = 26,221,760.52
5. Step 5: Solve for x
   x = 26,221,760.52/2,114.44
6. Step 6: Final answer
   x = 12,401.29