Finding the Third Proportional to 21,488 and 34,512

Step by Step Solution

1. Step 1: Write the proportion equation
   21,488 : 34,512 = 34,512 : x
2. Step 2: Convert to fraction form
   21,488/34,512 = 34,512/x
3. Step 3: Cross multiply
   21,488x = 34,512 × 34,512
4. Step 4: Simplify right side
   21,488x = 1,191,078,144
5. Step 5: Solve for x
   x = 1,191,078,144/21,488
6. Step 6: Final answer
   x = 55,429.92