Finding the Third Proportional to 155,455.50 and 322,596

Step by Step Solution

1. Step 1: Write the proportion equation
   155,455.50 : 322,596 = 322,596 : x
2. Step 2: Convert to fraction form
   155,455.50/322,596 = 322,596/x
3. Step 3: Cross multiply
   155,455.50x = 322,596 × 322,596
4. Step 4: Simplify right side
   155,455.50x = 104,068,179,216
5. Step 5: Solve for x
   x = 104,068,179,216/155,455.50
6. Step 6: Final answer
   x = 669,440.32