Finding the Third Proportional to 10,722 and 17,122

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722 : 17,122 = 17,122 : x
2. Step 2: Convert to fraction form
   10,722/17,122 = 17,122/x
3. Step 3: Cross multiply
   10,722x = 17,122 × 17,122
4. Step 4: Simplify right side
   10,722x = 293,162,884
5. Step 5: Solve for x
   x = 293,162,884/10,722
6. Step 6: Final answer
   x = 27,342.18