Finding the Third Proportional to 20,602 and 30,821

Step by Step Solution

1. Step 1: Write the proportion equation
   20,602 : 30,821 = 30,821 : x
2. Step 2: Convert to fraction form
   20,602/30,821 = 30,821/x
3. Step 3: Cross multiply
   20,602x = 30,821 × 30,821
4. Step 4: Simplify right side
   20,602x = 949,934,041
5. Step 5: Solve for x
   x = 949,934,041/20,602
6. Step 6: Final answer
   x = 46,108.83