Finding the Third Proportional to 5,211.88 and 8,081.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,211.88 : 8,081.88 = 8,081.88 : x
2. Step 2: Convert to fraction form
   5,211.88/8,081.88 = 8,081.88/x
3. Step 3: Cross multiply
   5,211.88x = 8,081.88 × 8,081.88
4. Step 4: Simplify right side
   5,211.88x = 65,316,703.52
5. Step 5: Solve for x
   x = 65,316,703.52/5,211.88
6. Step 6: Final answer
   x = 12,532.29