Finding the Third Proportional to 3,639.30 and 7,816.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639.30 : 7,816.82 = 7,816.82 : x
2. Step 2: Convert to fraction form
   3,639.30/7,816.82 = 7,816.82/x
3. Step 3: Cross multiply
   3,639.30x = 7,816.82 × 7,816.82
4. Step 4: Simplify right side
   3,639.30x = 61,102,618.73
5. Step 5: Solve for x
   x = 61,102,618.73/3,639.30
6. Step 6: Final answer
   x = 16,789.64