Finding the Third Proportional to 21,104 and 31,742

Step by Step Solution

1. Step 1: Write the proportion equation
   21,104 : 31,742 = 31,742 : x
2. Step 2: Convert to fraction form
   21,104/31,742 = 31,742/x
3. Step 3: Cross multiply
   21,104x = 31,742 × 31,742
4. Step 4: Simplify right side
   21,104x = 1,007,554,564
5. Step 5: Solve for x
   x = 1,007,554,564/21,104
6. Step 6: Final answer
   x = 47,742.35