Finding the Third Proportional to 31,640 and 68,044

Step by Step Solution

1. Step 1: Write the proportion equation
   31,640 : 68,044 = 68,044 : x
2. Step 2: Convert to fraction form
   31,640/68,044 = 68,044/x
3. Step 3: Cross multiply
   31,640x = 68,044 × 68,044
4. Step 4: Simplify right side
   31,640x = 4,629,985,936
5. Step 5: Solve for x
   x = 4,629,985,936/31,640
6. Step 6: Final answer
   x = 146,333.31