Finding the Third Proportional to 21,048 and 30,408

Step by Step Solution

1. Step 1: Write the proportion equation
   21,048 : 30,408 = 30,408 : x
2. Step 2: Convert to fraction form
   21,048/30,408 = 30,408/x
3. Step 3: Cross multiply
   21,048x = 30,408 × 30,408
4. Step 4: Simplify right side
   21,048x = 924,646,464
5. Step 5: Solve for x
   x = 924,646,464/21,048
6. Step 6: Final answer
   x = 43,930.37