Finding the Third Proportional to 222,576 and 487,800

Step by Step Solution

1. Step 1: Write the proportion equation
   222,576 : 487,800 = 487,800 : x
2. Step 2: Convert to fraction form
   222,576/487,800 = 487,800/x
3. Step 3: Cross multiply
   222,576x = 487,800 × 487,800
4. Step 4: Simplify right side
   222,576x = 237,948,840,000
5. Step 5: Solve for x
   x = 237,948,840,000/222,576
6. Step 6: Final answer
   x = 1,069,067.82