Finding the Third Proportional to 21,590 and 30,360

Step by Step Solution

1. Step 1: Write the proportion equation
   21,590 : 30,360 = 30,360 : x
2. Step 2: Convert to fraction form
   21,590/30,360 = 30,360/x
3. Step 3: Cross multiply
   21,590x = 30,360 × 30,360
4. Step 4: Simplify right side
   21,590x = 921,729,600
5. Step 5: Solve for x
   x = 921,729,600/21,590
6. Step 6: Final answer
   x = 42,692.43