Finding the Third Proportional to 155,544 and 320,900

Step by Step Solution

1. Step 1: Write the proportion equation
   155,544 : 320,900 = 320,900 : x
2. Step 2: Convert to fraction form
   155,544/320,900 = 320,900/x
3. Step 3: Cross multiply
   155,544x = 320,900 × 320,900
4. Step 4: Simplify right side
   155,544x = 102,976,810,000
5. Step 5: Solve for x
   x = 102,976,810,000/155,544
6. Step 6: Final answer
   x = 662,042.96