Finding the Third Proportional to 184,685 and 398,530

Step by Step Solution

1. Step 1: Write the proportion equation
   184,685 : 398,530 = 398,530 : x
2. Step 2: Convert to fraction form
   184,685/398,530 = 398,530/x
3. Step 3: Cross multiply
   184,685x = 398,530 × 398,530
4. Step 4: Simplify right side
   184,685x = 158,826,160,900
5. Step 5: Solve for x
   x = 158,826,160,900/184,685
6. Step 6: Final answer
   x = 859,984.09