Finding the Third Proportional to 16,618 and 34,638

Step by Step Solution

1. Step 1: Write the proportion equation
   16,618 : 34,638 = 34,638 : x
2. Step 2: Convert to fraction form
   16,618/34,638 = 34,638/x
3. Step 3: Cross multiply
   16,618x = 34,638 × 34,638
4. Step 4: Simplify right side
   16,618x = 1,199,791,044
5. Step 5: Solve for x
   x = 1,199,791,044/16,618
6. Step 6: Final answer
   x = 72,198.28