Finding the Third Proportional to 9,300 and 12,618

Step by Step Solution

1. Step 1: Write the proportion equation
   9,300 : 12,618 = 12,618 : x
2. Step 2: Convert to fraction form
   9,300/12,618 = 12,618/x
3. Step 3: Cross multiply
   9,300x = 12,618 × 12,618
4. Step 4: Simplify right side
   9,300x = 159,213,924
5. Step 5: Solve for x
   x = 159,213,924/9,300
6. Step 6: Final answer
   x = 17,119.78