Finding the Third Proportional to 31,790 and 67,801

Step by Step Solution

1. Step 1: Write the proportion equation
   31,790 : 67,801 = 67,801 : x
2. Step 2: Convert to fraction form
   31,790/67,801 = 67,801/x
3. Step 3: Cross multiply
   31,790x = 67,801 × 67,801
4. Step 4: Simplify right side
   31,790x = 4,596,975,601
5. Step 5: Solve for x
   x = 4,596,975,601/31,790
6. Step 6: Final answer
   x = 144,604.45