Finding the Third Proportional to 21,612 and 31,716

Step by Step Solution

1. Step 1: Write the proportion equation
   21,612 : 31,716 = 31,716 : x
2. Step 2: Convert to fraction form
   21,612/31,716 = 31,716/x
3. Step 3: Cross multiply
   21,612x = 31,716 × 31,716
4. Step 4: Simplify right side
   21,612x = 1,005,904,656
5. Step 5: Solve for x
   x = 1,005,904,656/21,612
6. Step 6: Final answer
   x = 46,543.80