Finding the Third Proportional to 303,666 and 649,366.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,666 : 649,366.50 = 649,366.50 : x
2. Step 2: Convert to fraction form
   303,666/649,366.50 = 649,366.50/x
3. Step 3: Cross multiply
   303,666x = 649,366.50 × 649,366.50
4. Step 4: Simplify right side
   303,666x = 421,676,851,322.25
5. Step 5: Solve for x
   x = 421,676,851,322.25/303,666
6. Step 6: Final answer
   x = 1,388,620.56