Finding the Third Proportional to 21,318 and 31,974

Step by Step Solution

1. Step 1: Write the proportion equation
   21,318 : 31,974 = 31,974 : x
2. Step 2: Convert to fraction form
   21,318/31,974 = 31,974/x
3. Step 3: Cross multiply
   21,318x = 31,974 × 31,974
4. Step 4: Simplify right side
   21,318x = 1,022,336,676
5. Step 5: Solve for x
   x = 1,022,336,676/21,318
6. Step 6: Final answer
   x = 47,956.50