Finding the Third Proportional to 243,105 and 368,016

Step by Step Solution

1. Step 1: Write the proportion equation
   243,105 : 368,016 = 368,016 : x
2. Step 2: Convert to fraction form
   243,105/368,016 = 368,016/x
3. Step 3: Cross multiply
   243,105x = 368,016 × 368,016
4. Step 4: Simplify right side
   243,105x = 135,435,776,256
5. Step 5: Solve for x
   x = 135,435,776,256/243,105
6. Step 6: Final answer
   x = 557,108.15