Finding the Third Proportional to 21,917 and 31,012

Step by Step Solution

1. Step 1: Write the proportion equation
   21,917 : 31,012 = 31,012 : x
2. Step 2: Convert to fraction form
   21,917/31,012 = 31,012/x
3. Step 3: Cross multiply
   21,917x = 31,012 × 31,012
4. Step 4: Simplify right side
   21,917x = 961,744,144
5. Step 5: Solve for x
   x = 961,744,144/21,917
6. Step 6: Final answer
   x = 43,881.19