Finding the Third Proportional to 12,618 and 30,005

Step by Step Solution

1. Step 1: Write the proportion equation
   12,618 : 30,005 = 30,005 : x
2. Step 2: Convert to fraction form
   12,618/30,005 = 30,005/x
3. Step 3: Cross multiply
   12,618x = 30,005 × 30,005
4. Step 4: Simplify right side
   12,618x = 900,300,025
5. Step 5: Solve for x
   x = 900,300,025/12,618
6. Step 6: Final answer
   x = 71,350.45