Finding the Third Proportional to 302,401.50 and 649,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,401.50 : 649,630.50 = 649,630.50 : x
2. Step 2: Convert to fraction form
   302,401.50/649,630.50 = 649,630.50/x
3. Step 3: Cross multiply
   302,401.50x = 649,630.50 × 649,630.50
4. Step 4: Simplify right side
   302,401.50x = 422,019,786,530.25
5. Step 5: Solve for x
   x = 422,019,786,530.25/302,401.50
6. Step 6: Final answer
   x = 1,395,561.15