Finding the Third Proportional to 20,976 and 42,924

Step by Step Solution

1. Step 1: Write the proportion equation
   20,976 : 42,924 = 42,924 : x
2. Step 2: Convert to fraction form
   20,976/42,924 = 42,924/x
3. Step 3: Cross multiply
   20,976x = 42,924 × 42,924
4. Step 4: Simplify right side
   20,976x = 1,842,469,776
5. Step 5: Solve for x
   x = 1,842,469,776/20,976
6. Step 6: Final answer
   x = 87,837.04