Finding the Third Proportional to 154,928 and 328,456

Step by Step Solution

1. Step 1: Write the proportion equation
   154,928 : 328,456 = 328,456 : x
2. Step 2: Convert to fraction form
   154,928/328,456 = 328,456/x
3. Step 3: Cross multiply
   154,928x = 328,456 × 328,456
4. Step 4: Simplify right side
   154,928x = 107,883,343,936
5. Step 5: Solve for x
   x = 107,883,343,936/154,928
6. Step 6: Final answer
   x = 696,345.04