Finding the Third Proportional to 222,138 and 479,756

Step by Step Solution

1. Step 1: Write the proportion equation
   222,138 : 479,756 = 479,756 : x
2. Step 2: Convert to fraction form
   222,138/479,756 = 479,756/x
3. Step 3: Cross multiply
   222,138x = 479,756 × 479,756
4. Step 4: Simplify right side
   222,138x = 230,165,819,536
5. Step 5: Solve for x
   x = 230,165,819,536/222,138
6. Step 6: Final answer
   x = 1,036,138.88