Finding the Third Proportional to 152,872 and 316,544

Step by Step Solution

1. Step 1: Write the proportion equation
   152,872 : 316,544 = 316,544 : x
2. Step 2: Convert to fraction form
   152,872/316,544 = 316,544/x
3. Step 3: Cross multiply
   152,872x = 316,544 × 316,544
4. Step 4: Simplify right side
   152,872x = 100,200,103,936
5. Step 5: Solve for x
   x = 100,200,103,936/152,872
6. Step 6: Final answer
   x = 655,450.99