Finding the Third Proportional to 21,318 and 31,752

Step by Step Solution

1. Step 1: Write the proportion equation
   21,318 : 31,752 = 31,752 : x
2. Step 2: Convert to fraction form
   21,318/31,752 = 31,752/x
3. Step 3: Cross multiply
   21,318x = 31,752 × 31,752
4. Step 4: Simplify right side
   21,318x = 1,008,189,504
5. Step 5: Solve for x
   x = 1,008,189,504/21,318
6. Step 6: Final answer
   x = 47,292.87