Finding the Third Proportional to 15,724 and 17,938

Step by Step Solution

1. Step 1: Write the proportion equation
   15,724 : 17,938 = 17,938 : x
2. Step 2: Convert to fraction form
   15,724/17,938 = 17,938/x
3. Step 3: Cross multiply
   15,724x = 17,938 × 17,938
4. Step 4: Simplify right side
   15,724x = 321,771,844
5. Step 5: Solve for x
   x = 321,771,844/15,724
6. Step 6: Final answer
   x = 20,463.74