Finding the Third Proportional to 20,860 and 31,469

Step by Step Solution

1. Step 1: Write the proportion equation
   20,860 : 31,469 = 31,469 : x
2. Step 2: Convert to fraction form
   20,860/31,469 = 31,469/x
3. Step 3: Cross multiply
   20,860x = 31,469 × 31,469
4. Step 4: Simplify right side
   20,860x = 990,297,961
5. Step 5: Solve for x
   x = 990,297,961/20,860
6. Step 6: Final answer
   x = 47,473.54