Finding the Third Proportional to 21,157 and 31,006

Step by Step Solution

1. Step 1: Write the proportion equation
   21,157 : 31,006 = 31,006 : x
2. Step 2: Convert to fraction form
   21,157/31,006 = 31,006/x
3. Step 3: Cross multiply
   21,157x = 31,006 × 31,006
4. Step 4: Simplify right side
   21,157x = 961,372,036
5. Step 5: Solve for x
   x = 961,372,036/21,157
6. Step 6: Final answer
   x = 45,439.90