Finding the Third Proportional to 3,314.75 and 7,221.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,314.75 : 7,221.25 = 7,221.25 : x
2. Step 2: Convert to fraction form
   3,314.75/7,221.25 = 7,221.25/x
3. Step 3: Cross multiply
   3,314.75x = 7,221.25 × 7,221.25
4. Step 4: Simplify right side
   3,314.75x = 52,146,451.56
5. Step 5: Solve for x
   x = 52,146,451.56/3,314.75
6. Step 6: Final answer
   x = 15,731.64