Finding the Third Proportional to 303,696 and 664,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,696 : 664,591.50 = 664,591.50 : x
2. Step 2: Convert to fraction form
   303,696/664,591.50 = 664,591.50/x
3. Step 3: Cross multiply
   303,696x = 664,591.50 × 664,591.50
4. Step 4: Simplify right side
   303,696x = 441,681,861,872.25
5. Step 5: Solve for x
   x = 441,681,861,872.25/303,696
6. Step 6: Final answer
   x = 1,454,355.22