Finding the Third Proportional to 21,408 and 43,968

Step by Step Solution

1. Step 1: Write the proportion equation
   21,408 : 43,968 = 43,968 : x
2. Step 2: Convert to fraction form
   21,408/43,968 = 43,968/x
3. Step 3: Cross multiply
   21,408x = 43,968 × 43,968
4. Step 4: Simplify right side
   21,408x = 1,933,185,024
5. Step 5: Solve for x
   x = 1,933,185,024/21,408
6. Step 6: Final answer
   x = 90,301.99