Finding the Third Proportional to 7,112 and 11,131

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112 : 11,131 = 11,131 : x
2. Step 2: Convert to fraction form
   7,112/11,131 = 11,131/x
3. Step 3: Cross multiply
   7,112x = 11,131 × 11,131
4. Step 4: Simplify right side
   7,112x = 123,899,161
5. Step 5: Solve for x
   x = 123,899,161/7,112
6. Step 6: Final answer
   x = 17,421.14