Finding the Third Proportional to 369,720 and 801,216

Step by Step Solution

1. Step 1: Write the proportion equation
   369,720 : 801,216 = 801,216 : x
2. Step 2: Convert to fraction form
   369,720/801,216 = 801,216/x
3. Step 3: Cross multiply
   369,720x = 801,216 × 801,216
4. Step 4: Simplify right side
   369,720x = 641,947,078,656
5. Step 5: Solve for x
   x = 641,947,078,656/369,720
6. Step 6: Final answer
   x = 1,736,306.07