Finding the Third Proportional to 325,870 and 455,250

Step by Step Solution

1. Step 1: Write the proportion equation
   325,870 : 455,250 = 455,250 : x
2. Step 2: Convert to fraction form
   325,870/455,250 = 455,250/x
3. Step 3: Cross multiply
   325,870x = 455,250 × 455,250
4. Step 4: Simplify right side
   325,870x = 207,252,562,500
5. Step 5: Solve for x
   x = 207,252,562,500/325,870
6. Step 6: Final answer
   x = 635,997.68