Finding the Third Proportional to 17,122 and 19,390

Step by Step Solution

1. Step 1: Write the proportion equation
   17,122 : 19,390 = 19,390 : x
2. Step 2: Convert to fraction form
   17,122/19,390 = 19,390/x
3. Step 3: Cross multiply
   17,122x = 19,390 × 19,390
4. Step 4: Simplify right side
   17,122x = 375,972,100
5. Step 5: Solve for x
   x = 375,972,100/17,122
6. Step 6: Final answer
   x = 21,958.42