Finding the Third Proportional to 21,027 and 31,630

Step by Step Solution

1. Step 1: Write the proportion equation
   21,027 : 31,630 = 31,630 : x
2. Step 2: Convert to fraction form
   21,027/31,630 = 31,630/x
3. Step 3: Cross multiply
   21,027x = 31,630 × 31,630
4. Step 4: Simplify right side
   21,027x = 1,000,456,900
5. Step 5: Solve for x
   x = 1,000,456,900/21,027
6. Step 6: Final answer
   x = 47,579.63