Finding the Third Proportional to 280,322 and 435,250

Step by Step Solution

1. Step 1: Write the proportion equation
   280,322 : 435,250 = 435,250 : x
2. Step 2: Convert to fraction form
   280,322/435,250 = 435,250/x
3. Step 3: Cross multiply
   280,322x = 435,250 × 435,250
4. Step 4: Simplify right side
   280,322x = 189,442,562,500
5. Step 5: Solve for x
   x = 189,442,562,500/280,322
6. Step 6: Final answer
   x = 675,803.41