Finding the Third Proportional to 222,440 and 479,872

Step by Step Solution

1. Step 1: Write the proportion equation
   222,440 : 479,872 = 479,872 : x
2. Step 2: Convert to fraction form
   222,440/479,872 = 479,872/x
3. Step 3: Cross multiply
   222,440x = 479,872 × 479,872
4. Step 4: Simplify right side
   222,440x = 230,277,136,384
5. Step 5: Solve for x
   x = 230,277,136,384/222,440
6. Step 6: Final answer
   x = 1,035,232.59