Finding the Third Proportional to 3,287.25 and 7,210.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,287.25 : 7,210.69 = 7,210.69 : x
2. Step 2: Convert to fraction form
   3,287.25/7,210.69 = 7,210.69/x
3. Step 3: Cross multiply
   3,287.25x = 7,210.69 × 7,210.69
4. Step 4: Simplify right side
   3,287.25x = 51,994,014.22
5. Step 5: Solve for x
   x = 51,994,014.22/3,287.25
6. Step 6: Final answer
   x = 15,816.87