Finding the Third Proportional to 155,250 and 320,410

Step by Step Solution

1. Step 1: Write the proportion equation
   155,250 : 320,410 = 320,410 : x
2. Step 2: Convert to fraction form
   155,250/320,410 = 320,410/x
3. Step 3: Cross multiply
   155,250x = 320,410 × 320,410
4. Step 4: Simplify right side
   155,250x = 102,662,568,100
5. Step 5: Solve for x
   x = 102,662,568,100/155,250
6. Step 6: Final answer
   x = 661,272.58