Finding the Third Proportional to 145,557 and 308,610

Step by Step Solution

1. Step 1: Write the proportion equation
   145,557 : 308,610 = 308,610 : x
2. Step 2: Convert to fraction form
   145,557/308,610 = 308,610/x
3. Step 3: Cross multiply
   145,557x = 308,610 × 308,610
4. Step 4: Simplify right side
   145,557x = 95,240,132,100
5. Step 5: Solve for x
   x = 95,240,132,100/145,557
6. Step 6: Final answer
   x = 654,315.03