Finding the Third Proportional to 21,000 and 30,520

Step by Step Solution

1. Step 1: Write the proportion equation
   21,000 : 30,520 = 30,520 : x
2. Step 2: Convert to fraction form
   21,000/30,520 = 30,520/x
3. Step 3: Cross multiply
   21,000x = 30,520 × 30,520
4. Step 4: Simplify right side
   21,000x = 931,470,400
5. Step 5: Solve for x
   x = 931,470,400/21,000
6. Step 6: Final answer
   x = 44,355.73