Finding the Third Proportional to 31,363 and 67,042

Step by Step Solution

1. Step 1: Write the proportion equation
   31,363 : 67,042 = 67,042 : x
2. Step 2: Convert to fraction form
   31,363/67,042 = 67,042/x
3. Step 3: Cross multiply
   31,363x = 67,042 × 67,042
4. Step 4: Simplify right side
   31,363x = 4,494,629,764
5. Step 5: Solve for x
   x = 4,494,629,764/31,363
6. Step 6: Final answer
   x = 143,309.94