Finding the Third Proportional to 3,960.56 and 8,375.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,960.56 : 8,375.91 = 8,375.91 : x
2. Step 2: Convert to fraction form
   3,960.56/8,375.91 = 8,375.91/x
3. Step 3: Cross multiply
   3,960.56x = 8,375.91 × 8,375.91
4. Step 4: Simplify right side
   3,960.56x = 70,155,805.51
5. Step 5: Solve for x
   x = 70,155,805.51/3,960.56
6. Step 6: Final answer
   x = 17,713.60