Finding the Third Proportional to 15,180 and 17,970

Step by Step Solution

1. Step 1: Write the proportion equation
   15,180 : 17,970 = 17,970 : x
2. Step 2: Convert to fraction form
   15,180/17,970 = 17,970/x
3. Step 3: Cross multiply
   15,180x = 17,970 × 17,970
4. Step 4: Simplify right side
   15,180x = 322,920,900
5. Step 5: Solve for x
   x = 322,920,900/15,180
6. Step 6: Final answer
   x = 21,272.79