Finding the Third Proportional to 21,488 and 34,392

Step by Step Solution

1. Step 1: Write the proportion equation
   21,488 : 34,392 = 34,392 : x
2. Step 2: Convert to fraction form
   21,488/34,392 = 34,392/x
3. Step 3: Cross multiply
   21,488x = 34,392 × 34,392
4. Step 4: Simplify right side
   21,488x = 1,182,809,664
5. Step 5: Solve for x
   x = 1,182,809,664/21,488
6. Step 6: Final answer
   x = 55,045.13