Finding the Third Proportional to 11,886.56 and 16,616.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,886.56 : 16,616.91 = 16,616.91 : x
2. Step 2: Convert to fraction form
   11,886.56/16,616.91 = 16,616.91/x
3. Step 3: Cross multiply
   11,886.56x = 16,616.91 × 16,616.91
4. Step 4: Simplify right side
   11,886.56x = 276,121,573.32
5. Step 5: Solve for x
   x = 276,121,573.32/11,886.56
6. Step 6: Final answer
   x = 23,229.72