Finding the Third Proportional to 3,322.69 and 5,287.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,322.69 : 5,287.78 = 5,287.78 : x
2. Step 2: Convert to fraction form
   3,322.69/5,287.78 = 5,287.78/x
3. Step 3: Cross multiply
   3,322.69x = 5,287.78 × 5,287.78
4. Step 4: Simplify right side
   3,322.69x = 27,960,630.55
5. Step 5: Solve for x
   x = 27,960,630.55/3,322.69
6. Step 6: Final answer
   x = 8,415.06