Finding the Third Proportional to 192,932 and 400,648

Step by Step Solution

1. Step 1: Write the proportion equation
   192,932 : 400,648 = 400,648 : x
2. Step 2: Convert to fraction form
   192,932/400,648 = 400,648/x
3. Step 3: Cross multiply
   192,932x = 400,648 × 400,648
4. Step 4: Simplify right side
   192,932x = 160,518,819,904
5. Step 5: Solve for x
   x = 160,518,819,904/192,932
6. Step 6: Final answer
   x = 831,996.87