Finding the Third Proportional to 3,936.94 and 8,651.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.94 : 8,651.81 = 8,651.81 : x
2. Step 2: Convert to fraction form
   3,936.94/8,651.81 = 8,651.81/x
3. Step 3: Cross multiply
   3,936.94x = 8,651.81 × 8,651.81
4. Step 4: Simplify right side
   3,936.94x = 74,853,859.54
5. Step 5: Solve for x
   x = 74,853,859.54/3,936.94
6. Step 6: Final answer
   x = 19,013.22