Finding the Third Proportional to 80,805 and 165,618

Step by Step Solution

1. Step 1: Write the proportion equation
   80,805 : 165,618 = 165,618 : x
2. Step 2: Convert to fraction form
   80,805/165,618 = 165,618/x
3. Step 3: Cross multiply
   80,805x = 165,618 × 165,618
4. Step 4: Simplify right side
   80,805x = 27,429,321,924
5. Step 5: Solve for x
   x = 27,429,321,924/80,805
6. Step 6: Final answer
   x = 339,450.80