Finding the Third Proportional to 145,808 and 303,249.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,808 : 303,249.50 = 303,249.50 : x
2. Step 2: Convert to fraction form
   145,808/303,249.50 = 303,249.50/x
3. Step 3: Cross multiply
   145,808x = 303,249.50 × 303,249.50
4. Step 4: Simplify right side
   145,808x = 91,960,259,250.25
5. Step 5: Solve for x
   x = 91,960,259,250.25/145,808
6. Step 6: Final answer
   x = 630,694.20