Finding the Third Proportional to 3,604.50 and 7,864.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,604.50 : 7,864.59 = 7,864.59 : x
2. Step 2: Convert to fraction form
   3,604.50/7,864.59 = 7,864.59/x
3. Step 3: Cross multiply
   3,604.50x = 7,864.59 × 7,864.59
4. Step 4: Simplify right side
   3,604.50x = 61,851,834.85
5. Step 5: Solve for x
   x = 61,851,834.85/3,604.50
6. Step 6: Final answer
   x = 17,159.62