Finding the Third Proportional to 372,404 and 809,608

Step by Step Solution

1. Step 1: Write the proportion equation
   372,404 : 809,608 = 809,608 : x
2. Step 2: Convert to fraction form
   372,404/809,608 = 809,608/x
3. Step 3: Cross multiply
   372,404x = 809,608 × 809,608
4. Step 4: Simplify right side
   372,404x = 655,465,113,664
5. Step 5: Solve for x
   x = 655,465,113,664/372,404
6. Step 6: Final answer
   x = 1,760,091.50