Finding the Third Proportional to 3,479.12 and 6,131.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,479.12 : 6,131.72 = 6,131.72 : x
2. Step 2: Convert to fraction form
   3,479.12/6,131.72 = 6,131.72/x
3. Step 3: Cross multiply
   3,479.12x = 6,131.72 × 6,131.72
4. Step 4: Simplify right side
   3,479.12x = 37,597,938.90
5. Step 5: Solve for x
   x = 37,597,938.90/3,479.12
6. Step 6: Final answer
   x = 10,806.73