Finding the Third Proportional to 21,224 and 30,256

Step by Step Solution

1. Step 1: Write the proportion equation
   21,224 : 30,256 = 30,256 : x
2. Step 2: Convert to fraction form
   21,224/30,256 = 30,256/x
3. Step 3: Cross multiply
   21,224x = 30,256 × 30,256
4. Step 4: Simplify right side
   21,224x = 915,425,536
5. Step 5: Solve for x
   x = 915,425,536/21,224
6. Step 6: Final answer
   x = 43,131.62