Finding the Third Proportional to 222,938 and 485,238

Step by Step Solution

1. Step 1: Write the proportion equation
   222,938 : 485,238 = 485,238 : x
2. Step 2: Convert to fraction form
   222,938/485,238 = 485,238/x
3. Step 3: Cross multiply
   222,938x = 485,238 × 485,238
4. Step 4: Simplify right side
   222,938x = 235,455,916,644
5. Step 5: Solve for x
   x = 235,455,916,644/222,938
6. Step 6: Final answer
   x = 1,056,149.77