Finding the Third Proportional to 3,691.50 and 8,065.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,691.50 : 8,065.50 = 8,065.50 : x
2. Step 2: Convert to fraction form
   3,691.50/8,065.50 = 8,065.50/x
3. Step 3: Cross multiply
   3,691.50x = 8,065.50 × 8,065.50
4. Step 4: Simplify right side
   3,691.50x = 65,052,290.25
5. Step 5: Solve for x
   x = 65,052,290.25/3,691.50
6. Step 6: Final answer
   x = 17,622.18