Finding the Third Proportional to 152,886 and 324,273

Step by Step Solution

1. Step 1: Write the proportion equation
   152,886 : 324,273 = 324,273 : x
2. Step 2: Convert to fraction form
   152,886/324,273 = 324,273/x
3. Step 3: Cross multiply
   152,886x = 324,273 × 324,273
4. Step 4: Simplify right side
   152,886x = 105,152,978,529
5. Step 5: Solve for x
   x = 105,152,978,529/152,886
6. Step 6: Final answer
   x = 687,786.84