Finding the Third Proportional to 10,908.63 and 16,680.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,908.63 : 16,680.20 = 16,680.20 : x
2. Step 2: Convert to fraction form
   10,908.63/16,680.20 = 16,680.20/x
3. Step 3: Cross multiply
   10,908.63x = 16,680.20 × 16,680.20
4. Step 4: Simplify right side
   10,908.63x = 278,229,045.98
5. Step 5: Solve for x
   x = 278,229,045.98/10,908.63
6. Step 6: Final answer
   x = 25,505.40