Finding the Third Proportional to 11,191 and 15,145

Step by Step Solution

1. Step 1: Write the proportion equation
   11,191 : 15,145 = 15,145 : x
2. Step 2: Convert to fraction form
   11,191/15,145 = 15,145/x
3. Step 3: Cross multiply
   11,191x = 15,145 × 15,145
4. Step 4: Simplify right side
   11,191x = 229,371,025
5. Step 5: Solve for x
   x = 229,371,025/11,191
6. Step 6: Final answer
   x = 20,496.03