Finding the Third Proportional to 3,399.47 and 7,885.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,399.47 : 7,885.69 = 7,885.69 : x
2. Step 2: Convert to fraction form
   3,399.47/7,885.69 = 7,885.69/x
3. Step 3: Cross multiply
   3,399.47x = 7,885.69 × 7,885.69
4. Step 4: Simplify right side
   3,399.47x = 62,184,067.35
5. Step 5: Solve for x
   x = 62,184,067.35/3,399.47
6. Step 6: Final answer
   x = 18,292.29