Finding the Third Proportional to 325,870 and 681,530

Step by Step Solution

1. Step 1: Write the proportion equation
   325,870 : 681,530 = 681,530 : x
2. Step 2: Convert to fraction form
   325,870/681,530 = 681,530/x
3. Step 3: Cross multiply
   325,870x = 681,530 × 681,530
4. Step 4: Simplify right side
   325,870x = 464,483,140,900
5. Step 5: Solve for x
   x = 464,483,140,900/325,870
6. Step 6: Final answer
   x = 1,425,363.31