Finding the Third Proportional to 20,412 and 30,618

Step by Step Solution

1. Step 1: Write the proportion equation
   20,412 : 30,618 = 30,618 : x
2. Step 2: Convert to fraction form
   20,412/30,618 = 30,618/x
3. Step 3: Cross multiply
   20,412x = 30,618 × 30,618
4. Step 4: Simplify right side
   20,412x = 937,461,924
5. Step 5: Solve for x
   x = 937,461,924/20,412
6. Step 6: Final answer
   x = 45,927