Finding the Third Proportional to 10,909.69 and 12,653.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,909.69 : 12,653.72 = 12,653.72 : x
2. Step 2: Convert to fraction form
   10,909.69/12,653.72 = 12,653.72/x
3. Step 3: Cross multiply
   10,909.69x = 12,653.72 × 12,653.72
4. Step 4: Simplify right side
   10,909.69x = 160,116,598.20
5. Step 5: Solve for x
   x = 160,116,598.20/10,909.69
6. Step 6: Final answer
   x = 14,676.55