Finding the Third Proportional to 21,320 and 43,488

Step by Step Solution

1. Step 1: Write the proportion equation
   21,320 : 43,488 = 43,488 : x
2. Step 2: Convert to fraction form
   21,320/43,488 = 43,488/x
3. Step 3: Cross multiply
   21,320x = 43,488 × 43,488
4. Step 4: Simplify right side
   21,320x = 1,891,206,144
5. Step 5: Solve for x
   x = 1,891,206,144/21,320
6. Step 6: Final answer
   x = 88,705.73