Finding the Third Proportional to 10,643.91 and 16,660.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,643.91 : 16,660.69 = 16,660.69 : x
2. Step 2: Convert to fraction form
   10,643.91/16,660.69 = 16,660.69/x
3. Step 3: Cross multiply
   10,643.91x = 16,660.69 × 16,660.69
4. Step 4: Simplify right side
   10,643.91x = 277,578,507.97
5. Step 5: Solve for x
   x = 277,578,507.97/10,643.91
6. Step 6: Final answer
   x = 26,078.63