Finding the Third Proportional to 31,305 and 67,918

Step by Step Solution

1. Step 1: Write the proportion equation
   31,305 : 67,918 = 67,918 : x
2. Step 2: Convert to fraction form
   31,305/67,918 = 67,918/x
3. Step 3: Cross multiply
   31,305x = 67,918 × 67,918
4. Step 4: Simplify right side
   31,305x = 4,612,854,724
5. Step 5: Solve for x
   x = 4,612,854,724/31,305
6. Step 6: Final answer
   x = 147,352.01