Finding the Third Proportional to 21,618 and 32,870

Step by Step Solution

1. Step 1: Write the proportion equation
   21,618 : 32,870 = 32,870 : x
2. Step 2: Convert to fraction form
   21,618/32,870 = 32,870/x
3. Step 3: Cross multiply
   21,618x = 32,870 × 32,870
4. Step 4: Simplify right side
   21,618x = 1,080,436,900
5. Step 5: Solve for x
   x = 1,080,436,900/21,618
6. Step 6: Final answer
   x = 49,978.58