Finding the Third Proportional to 152,756 and 331,648

Step by Step Solution

1. Step 1: Write the proportion equation
   152,756 : 331,648 = 331,648 : x
2. Step 2: Convert to fraction form
   152,756/331,648 = 331,648/x
3. Step 3: Cross multiply
   152,756x = 331,648 × 331,648
4. Step 4: Simplify right side
   152,756x = 109,990,395,904
5. Step 5: Solve for x
   x = 109,990,395,904/152,756
6. Step 6: Final answer
   x = 720,039.78