Finding the Third Proportional to 152,636 and 331,544

Step by Step Solution

1. Step 1: Write the proportion equation
   152,636 : 331,544 = 331,544 : x
2. Step 2: Convert to fraction form
   152,636/331,544 = 331,544/x
3. Step 3: Cross multiply
   152,636x = 331,544 × 331,544
4. Step 4: Simplify right side
   152,636x = 109,921,423,936
5. Step 5: Solve for x
   x = 109,921,423,936/152,636
6. Step 6: Final answer
   x = 720,153.99