Finding the Third Proportional to 155,868 and 336,960

Step by Step Solution

1. Step 1: Write the proportion equation
   155,868 : 336,960 = 336,960 : x
2. Step 2: Convert to fraction form
   155,868/336,960 = 336,960/x
3. Step 3: Cross multiply
   155,868x = 336,960 × 336,960
4. Step 4: Simplify right side
   155,868x = 113,542,041,600
5. Step 5: Solve for x
   x = 113,542,041,600/155,868
6. Step 6: Final answer
   x = 728,449.98