Finding the Third Proportional to 222,458 and 479,912

Step by Step Solution

1. Step 1: Write the proportion equation
   222,458 : 479,912 = 479,912 : x
2. Step 2: Convert to fraction form
   222,458/479,912 = 479,912/x
3. Step 3: Cross multiply
   222,458x = 479,912 × 479,912
4. Step 4: Simplify right side
   222,458x = 230,315,527,744
5. Step 5: Solve for x
   x = 230,315,527,744/222,458
6. Step 6: Final answer
   x = 1,035,321.40