Finding the Third Proportional to 21,006 and 30,861

Step by Step Solution

1. Step 1: Write the proportion equation
   21,006 : 30,861 = 30,861 : x
2. Step 2: Convert to fraction form
   21,006/30,861 = 30,861/x
3. Step 3: Cross multiply
   21,006x = 30,861 × 30,861
4. Step 4: Simplify right side
   21,006x = 952,401,321
5. Step 5: Solve for x
   x = 952,401,321/21,006
6. Step 6: Final answer
   x = 45,339.49