Finding the Third Proportional to 21,642 and 31,612

Step by Step Solution

1. Step 1: Write the proportion equation
   21,642 : 31,612 = 31,612 : x
2. Step 2: Convert to fraction form
   21,642/31,612 = 31,612/x
3. Step 3: Cross multiply
   21,642x = 31,612 × 31,612
4. Step 4: Simplify right side
   21,642x = 999,318,544
5. Step 5: Solve for x
   x = 999,318,544/21,642
6. Step 6: Final answer
   x = 46,174.96