Finding the Third Proportional to 3,687.75 and 8,061.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,687.75 : 8,061.75 = 8,061.75 : x
2. Step 2: Convert to fraction form
   3,687.75/8,061.75 = 8,061.75/x
3. Step 3: Cross multiply
   3,687.75x = 8,061.75 × 8,061.75
4. Step 4: Simplify right side
   3,687.75x = 64,991,813.06
5. Step 5: Solve for x
   x = 64,991,813.06/3,687.75
6. Step 6: Final answer
   x = 17,623.70