Finding the Third Proportional to 31,013 and 67,555

Step by Step Solution

1. Step 1: Write the proportion equation
   31,013 : 67,555 = 67,555 : x
2. Step 2: Convert to fraction form
   31,013/67,555 = 67,555/x
3. Step 3: Cross multiply
   31,013x = 67,555 × 67,555
4. Step 4: Simplify right side
   31,013x = 4,563,678,025
5. Step 5: Solve for x
   x = 4,563,678,025/31,013
6. Step 6: Final answer
   x = 147,153.71