Finding the Third Proportional to 250,618 and 551,084

Step by Step Solution

1. Step 1: Write the proportion equation
   250,618 : 551,084 = 551,084 : x
2. Step 2: Convert to fraction form
   250,618/551,084 = 551,084/x
3. Step 3: Cross multiply
   250,618x = 551,084 × 551,084
4. Step 4: Simplify right side
   250,618x = 303,693,575,056
5. Step 5: Solve for x
   x = 303,693,575,056/250,618
6. Step 6: Final answer
   x = 1,211,778.78