Finding the Third Proportional to 303,667.50 and 664,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,667.50 : 664,540.50 = 664,540.50 : x
2. Step 2: Convert to fraction form
   303,667.50/664,540.50 = 664,540.50/x
3. Step 3: Cross multiply
   303,667.50x = 664,540.50 × 664,540.50
4. Step 4: Simplify right side
   303,667.50x = 441,614,076,140.25
5. Step 5: Solve for x
   x = 441,614,076,140.25/303,667.50
6. Step 6: Final answer
   x = 1,454,268.49