Finding the Third Proportional to 152,218 and 328,568

Step by Step Solution

1. Step 1: Write the proportion equation
   152,218 : 328,568 = 328,568 : x
2. Step 2: Convert to fraction form
   152,218/328,568 = 328,568/x
3. Step 3: Cross multiply
   152,218x = 328,568 × 328,568
4. Step 4: Simplify right side
   152,218x = 107,956,930,624
5. Step 5: Solve for x
   x = 107,956,930,624/152,218
6. Step 6: Final answer
   x = 709,225.79