Finding the Third Proportional to 31,377 and 67,116

Step by Step Solution

1. Step 1: Write the proportion equation
   31,377 : 67,116 = 67,116 : x
2. Step 2: Convert to fraction form
   31,377/67,116 = 67,116/x
3. Step 3: Cross multiply
   31,377x = 67,116 × 67,116
4. Step 4: Simplify right side
   31,377x = 4,504,557,456
5. Step 5: Solve for x
   x = 4,504,557,456/31,377
6. Step 6: Final answer
   x = 143,562.40