Finding the Third Proportional to 11,109 and 13,161

Step by Step Solution

1. Step 1: Write the proportion equation
   11,109 : 13,161 = 13,161 : x
2. Step 2: Convert to fraction form
   11,109/13,161 = 13,161/x
3. Step 3: Cross multiply
   11,109x = 13,161 × 13,161
4. Step 4: Simplify right side
   11,109x = 173,211,921
5. Step 5: Solve for x
   x = 173,211,921/11,109
6. Step 6: Final answer
   x = 15,592.04