Finding the Third Proportional to 6,831 and 10,861.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,831 : 10,861.88 = 10,861.88 : x
2. Step 2: Convert to fraction form
   6,831/10,861.88 = 10,861.88/x
3. Step 3: Cross multiply
   6,831x = 10,861.88 × 10,861.88
4. Step 4: Simplify right side
   6,831x = 117,980,328.52
5. Step 5: Solve for x
   x = 117,980,328.52/6,831
6. Step 6: Final answer
   x = 17,271.31