Finding the Third Proportional to 21,012 and 31,957

Step by Step Solution

1. Step 1: Write the proportion equation
   21,012 : 31,957 = 31,957 : x
2. Step 2: Convert to fraction form
   21,012/31,957 = 31,957/x
3. Step 3: Cross multiply
   21,012x = 31,957 × 31,957
4. Step 4: Simplify right side
   21,012x = 1,021,249,849
5. Step 5: Solve for x
   x = 1,021,249,849/21,012
6. Step 6: Final answer
   x = 48,603.17