Finding the Third Proportional to 303,615 and 445,578.75

Step by Step Solution

1. Step 1: Write the proportion equation
   303,615 : 445,578.75 = 445,578.75 : x
2. Step 2: Convert to fraction form
   303,615/445,578.75 = 445,578.75/x
3. Step 3: Cross multiply
   303,615x = 445,578.75 × 445,578.75
4. Step 4: Simplify right side
   303,615x = 198,540,422,451.56
5. Step 5: Solve for x
   x = 198,540,422,451.56/303,615
6. Step 6: Final answer
   x = 653,921.65