Finding the Third Proportional to 159,678 and 222,018

Step by Step Solution

1. Step 1: Write the proportion equation
   159,678 : 222,018 = 222,018 : x
2. Step 2: Convert to fraction form
   159,678/222,018 = 222,018/x
3. Step 3: Cross multiply
   159,678x = 222,018 × 222,018
4. Step 4: Simplify right side
   159,678x = 49,291,992,324
5. Step 5: Solve for x
   x = 49,291,992,324/159,678
6. Step 6: Final answer
   x = 308,696.20