Finding the Third Proportional to 3,320.63 and 7,225.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,320.63 : 7,225.38 = 7,225.38 : x
2. Step 2: Convert to fraction form
   3,320.63/7,225.38 = 7,225.38/x
3. Step 3: Cross multiply
   3,320.63x = 7,225.38 × 7,225.38
4. Step 4: Simplify right side
   3,320.63x = 52,206,043.89
5. Step 5: Solve for x
   x = 52,206,043.89/3,320.63
6. Step 6: Final answer
   x = 15,721.75