Finding the Third Proportional to 3,345.47 and 7,204.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345.47 : 7,204.78 = 7,204.78 : x
2. Step 2: Convert to fraction form
   3,345.47/7,204.78 = 7,204.78/x
3. Step 3: Cross multiply
   3,345.47x = 7,204.78 × 7,204.78
4. Step 4: Simplify right side
   3,345.47x = 51,908,872.86
5. Step 5: Solve for x
   x = 51,908,872.86/3,345.47
6. Step 6: Final answer
   x = 15,516.17