Finding the Third Proportional to 17,866 and 31,811

Step by Step Solution

1. Step 1: Write the proportion equation
   17,866 : 31,811 = 31,811 : x
2. Step 2: Convert to fraction form
   17,866/31,811 = 31,811/x
3. Step 3: Cross multiply
   17,866x = 31,811 × 31,811
4. Step 4: Simplify right side
   17,866x = 1,011,939,721
5. Step 5: Solve for x
   x = 1,011,939,721/17,866
6. Step 6: Final answer
   x = 56,640.53