Finding the Third Proportional to 21,936 and 30,648

Step by Step Solution

1. Step 1: Write the proportion equation
   21,936 : 30,648 = 30,648 : x
2. Step 2: Convert to fraction form
   21,936/30,648 = 30,648/x
3. Step 3: Cross multiply
   21,936x = 30,648 × 30,648
4. Step 4: Simplify right side
   21,936x = 939,299,904
5. Step 5: Solve for x
   x = 939,299,904/21,936
6. Step 6: Final answer
   x = 42,820.02