Finding the Third Proportional to 2,439.70 and 5,425.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.70 : 5,425.31 = 5,425.31 : x
2. Step 2: Convert to fraction form
   2,439.70/5,425.31 = 5,425.31/x
3. Step 3: Cross multiply
   2,439.70x = 5,425.31 × 5,425.31
4. Step 4: Simplify right side
   2,439.70x = 29,434,015.72
5. Step 5: Solve for x
   x = 29,434,015.72/2,439.70
6. Step 6: Final answer
   x = 12,064.59