Finding the Third Proportional to 2,176.31 and 5,281.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176.31 : 5,281.88 = 5,281.88 : x
2. Step 2: Convert to fraction form
   2,176.31/5,281.88 = 5,281.88/x
3. Step 3: Cross multiply
   2,176.31x = 5,281.88 × 5,281.88
4. Step 4: Simplify right side
   2,176.31x = 27,898,203.52
5. Step 5: Solve for x
   x = 27,898,203.52/2,176.31
6. Step 6: Final answer
   x = 12,819.02