Finding the Third Proportional to 3,380.50 and 7,228.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.50 : 7,228.50 = 7,228.50 : x
2. Step 2: Convert to fraction form
   3,380.50/7,228.50 = 7,228.50/x
3. Step 3: Cross multiply
   3,380.50x = 7,228.50 × 7,228.50
4. Step 4: Simplify right side
   3,380.50x = 52,251,212.25
5. Step 5: Solve for x
   x = 52,251,212.25/3,380.50
6. Step 6: Final answer
   x = 15,456.65