Finding the Third Proportional to 188,496 and 398,808

Step by Step Solution

1. Step 1: Write the proportion equation
   188,496 : 398,808 = 398,808 : x
2. Step 2: Convert to fraction form
   188,496/398,808 = 398,808/x
3. Step 3: Cross multiply
   188,496x = 398,808 × 398,808
4. Step 4: Simplify right side
   188,496x = 159,047,820,864
5. Step 5: Solve for x
   x = 159,047,820,864/188,496
6. Step 6: Final answer
   x = 843,772.92