Finding the Third Proportional to 5,760.28 and 12,431.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,760.28 : 12,431.81 = 12,431.81 : x
2. Step 2: Convert to fraction form
   5,760.28/12,431.81 = 12,431.81/x
3. Step 3: Cross multiply
   5,760.28x = 12,431.81 × 12,431.81
4. Step 4: Simplify right side
   5,760.28x = 154,549,962.04
5. Step 5: Solve for x
   x = 154,549,962.04/5,760.28
6. Step 6: Final answer
   x = 26,830.28