Finding the Third Proportional to 303,661.50 and 649,356

Step by Step Solution

1. Step 1: Write the proportion equation
   303,661.50 : 649,356 = 649,356 : x
2. Step 2: Convert to fraction form
   303,661.50/649,356 = 649,356/x
3. Step 3: Cross multiply
   303,661.50x = 649,356 × 649,356
4. Step 4: Simplify right side
   303,661.50x = 421,663,214,736
5. Step 5: Solve for x
   x = 421,663,214,736/303,661.50
6. Step 6: Final answer
   x = 1,388,596.23