Finding the Third Proportional to 78,700 and 168,618

Step by Step Solution

1. Step 1: Write the proportion equation
   78,700 : 168,618 = 168,618 : x
2. Step 2: Convert to fraction form
   78,700/168,618 = 168,618/x
3. Step 3: Cross multiply
   78,700x = 168,618 × 168,618
4. Step 4: Simplify right side
   78,700x = 28,432,029,924
5. Step 5: Solve for x
   x = 28,432,029,924/78,700
6. Step 6: Final answer
   x = 361,271.03