Finding the Third Proportional to 222,916 and 487,304

Step by Step Solution

1. Step 1: Write the proportion equation
   222,916 : 487,304 = 487,304 : x
2. Step 2: Convert to fraction form
   222,916/487,304 = 487,304/x
3. Step 3: Cross multiply
   222,916x = 487,304 × 487,304
4. Step 4: Simplify right side
   222,916x = 237,465,188,416
5. Step 5: Solve for x
   x = 237,465,188,416/222,916
6. Step 6: Final answer
   x = 1,065,267.58