Finding the Third Proportional to 222,282 and 485,388

Step by Step Solution

1. Step 1: Write the proportion equation
   222,282 : 485,388 = 485,388 : x
2. Step 2: Convert to fraction form
   222,282/485,388 = 485,388/x
3. Step 3: Cross multiply
   222,282x = 485,388 × 485,388
4. Step 4: Simplify right side
   222,282x = 235,601,510,544
5. Step 5: Solve for x
   x = 235,601,510,544/222,282
6. Step 6: Final answer
   x = 1,059,921.68