Finding the Third Proportional to 3,807.32 and 8,315.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,807.32 : 8,315.16 = 8,315.16 : x
2. Step 2: Convert to fraction form
   3,807.32/8,315.16 = 8,315.16/x
3. Step 3: Cross multiply
   3,807.32x = 8,315.16 × 8,315.16
4. Step 4: Simplify right side
   3,807.32x = 69,141,823.46
5. Step 5: Solve for x
   x = 69,141,823.46/3,807.32
6. Step 6: Final answer
   x = 18,160.25