Finding the Third Proportional to 11,991 and 14,151

Step by Step Solution

1. Step 1: Write the proportion equation
   11,991 : 14,151 = 14,151 : x
2. Step 2: Convert to fraction form
   11,991/14,151 = 14,151/x
3. Step 3: Cross multiply
   11,991x = 14,151 × 14,151
4. Step 4: Simplify right side
   11,991x = 200,250,801
5. Step 5: Solve for x
   x = 200,250,801/11,991
6. Step 6: Final answer
   x = 16,700.09