Finding the Third Proportional to 21,012 and 31,582

Step by Step Solution

1. Step 1: Write the proportion equation
   21,012 : 31,582 = 31,582 : x
2. Step 2: Convert to fraction form
   21,012/31,582 = 31,582/x
3. Step 3: Cross multiply
   21,012x = 31,582 × 31,582
4. Step 4: Simplify right side
   21,012x = 997,422,724
5. Step 5: Solve for x
   x = 997,422,724/21,012
6. Step 6: Final answer
   x = 47,469.19