Finding the Third Proportional to 155,500 and 320,814

Step by Step Solution

1. Step 1: Write the proportion equation
   155,500 : 320,814 = 320,814 : x
2. Step 2: Convert to fraction form
   155,500/320,814 = 320,814/x
3. Step 3: Cross multiply
   155,500x = 320,814 × 320,814
4. Step 4: Simplify right side
   155,500x = 102,921,622,596
5. Step 5: Solve for x
   x = 102,921,622,596/155,500
6. Step 6: Final answer
   x = 661,875.39