Finding the Third Proportional to 155,817 and 222,799

Step by Step Solution

1. Step 1: Write the proportion equation
   155,817 : 222,799 = 222,799 : x
2. Step 2: Convert to fraction form
   155,817/222,799 = 222,799/x
3. Step 3: Cross multiply
   155,817x = 222,799 × 222,799
4. Step 4: Simplify right side
   155,817x = 49,639,394,401
5. Step 5: Solve for x
   x = 49,639,394,401/155,817
6. Step 6: Final answer
   x = 318,574.96