Finding the Third Proportional to 21,619 and 31,648

Step by Step Solution

1. Step 1: Write the proportion equation
   21,619 : 31,648 = 31,648 : x
2. Step 2: Convert to fraction form
   21,619/31,648 = 31,648/x
3. Step 3: Cross multiply
   21,619x = 31,648 × 31,648
4. Step 4: Simplify right side
   21,619x = 1,001,595,904
5. Step 5: Solve for x
   x = 1,001,595,904/21,619
6. Step 6: Final answer
   x = 46,329.43