Finding the Third Proportional to 408,936 and 837,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   408,936 : 837,709.50 = 837,709.50 : x
2. Step 2: Convert to fraction form
   408,936/837,709.50 = 837,709.50/x
3. Step 3: Cross multiply
   408,936x = 837,709.50 × 837,709.50
4. Step 4: Simplify right side
   408,936x = 701,757,206,390.25
5. Step 5: Solve for x
   x = 701,757,206,390.25/408,936
6. Step 6: Final answer
   x = 1,716,056.32