Finding the Third Proportional to 381,981.38 and 809,496.56

Step by Step Solution

1. Step 1: Write the proportion equation
   381,981.38 : 809,496.56 = 809,496.56 : x
2. Step 2: Convert to fraction form
   381,981.38/809,496.56 = 809,496.56/x
3. Step 3: Cross multiply
   381,981.38x = 809,496.56 × 809,496.56
4. Step 4: Simplify right side
   381,981.38x = 655,284,684,699.32
5. Step 5: Solve for x
   x = 655,284,684,699.32/381,981.38
6. Step 6: Final answer
   x = 1,715,488.58