Finding the Third Proportional to 170,838 and 399,150

Step by Step Solution

1. Step 1: Write the proportion equation
   170,838 : 399,150 = 399,150 : x
2. Step 2: Convert to fraction form
   170,838/399,150 = 399,150/x
3. Step 3: Cross multiply
   170,838x = 399,150 × 399,150
4. Step 4: Simplify right side
   170,838x = 159,320,722,500
5. Step 5: Solve for x
   x = 159,320,722,500/170,838
6. Step 6: Final answer
   x = 932,583.63