Finding the Third Proportional to 21,406 and 30,919

Step by Step Solution

1. Step 1: Write the proportion equation
   21,406 : 30,919 = 30,919 : x
2. Step 2: Convert to fraction form
   21,406/30,919 = 30,919/x
3. Step 3: Cross multiply
   21,406x = 30,919 × 30,919
4. Step 4: Simplify right side
   21,406x = 955,984,561
5. Step 5: Solve for x
   x = 955,984,561/21,406
6. Step 6: Final answer
   x = 44,659.65