Finding the Third Proportional to 11,520 and 12,736

Step by Step Solution

1. Step 1: Write the proportion equation
   11,520 : 12,736 = 12,736 : x
2. Step 2: Convert to fraction form
   11,520/12,736 = 12,736/x
3. Step 3: Cross multiply
   11,520x = 12,736 × 12,736
4. Step 4: Simplify right side
   11,520x = 162,205,696
5. Step 5: Solve for x
   x = 162,205,696/11,520
6. Step 6: Final answer
   x = 14,080.36