Finding the Third Proportional to 21,216 and 45,204

Step by Step Solution

1. Step 1: Write the proportion equation
   21,216 : 45,204 = 45,204 : x
2. Step 2: Convert to fraction form
   21,216/45,204 = 45,204/x
3. Step 3: Cross multiply
   21,216x = 45,204 × 45,204
4. Step 4: Simplify right side
   21,216x = 2,043,401,616
5. Step 5: Solve for x
   x = 2,043,401,616/21,216
6. Step 6: Final answer
   x = 96,314.18