Finding the Third Proportional to 31,920 and 64,752

Step by Step Solution

1. Step 1: Write the proportion equation
   31,920 : 64,752 = 64,752 : x
2. Step 2: Convert to fraction form
   31,920/64,752 = 64,752/x
3. Step 3: Cross multiply
   31,920x = 64,752 × 64,752
4. Step 4: Simplify right side
   31,920x = 4,192,821,504
5. Step 5: Solve for x
   x = 4,192,821,504/31,920
6. Step 6: Final answer
   x = 131,354.06