Finding the Third Proportional to 21,002 and 43,540

Step by Step Solution

1. Step 1: Write the proportion equation
   21,002 : 43,540 = 43,540 : x
2. Step 2: Convert to fraction form
   21,002/43,540 = 43,540/x
3. Step 3: Cross multiply
   21,002x = 43,540 × 43,540
4. Step 4: Simplify right side
   21,002x = 1,895,731,600
5. Step 5: Solve for x
   x = 1,895,731,600/21,002
6. Step 6: Final answer
   x = 90,264.34