Finding the Third Proportional to 7,978 and 17,180

Step by Step Solution

1. Step 1: Write the proportion equation
   7,978 : 17,180 = 17,180 : x
2. Step 2: Convert to fraction form
   7,978/17,180 = 17,180/x
3. Step 3: Cross multiply
   7,978x = 17,180 × 17,180
4. Step 4: Simplify right side
   7,978x = 295,152,400
5. Step 5: Solve for x
   x = 295,152,400/7,978
6. Step 6: Final answer
   x = 36,995.79