Finding the Third Proportional to 20,918 and 30,679

Step by Step Solution

1. Step 1: Write the proportion equation
   20,918 : 30,679 = 30,679 : x
2. Step 2: Convert to fraction form
   20,918/30,679 = 30,679/x
3. Step 3: Cross multiply
   20,918x = 30,679 × 30,679
4. Step 4: Simplify right side
   20,918x = 941,201,041
5. Step 5: Solve for x
   x = 941,201,041/20,918
6. Step 6: Final answer
   x = 44,994.79