Finding the Third Proportional to 3,900.66 and 7,345.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.66 : 7,345.69 = 7,345.69 : x
2. Step 2: Convert to fraction form
   3,900.66/7,345.69 = 7,345.69/x
3. Step 3: Cross multiply
   3,900.66x = 7,345.69 × 7,345.69
4. Step 4: Simplify right side
   3,900.66x = 53,959,124.85
5. Step 5: Solve for x
   x = 53,959,124.85/3,900.66
6. Step 6: Final answer
   x = 13,833.35