Finding the Third Proportional to 300,603 and 450,076.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,603 : 450,076.50 = 450,076.50 : x
2. Step 2: Convert to fraction form
   300,603/450,076.50 = 450,076.50/x
3. Step 3: Cross multiply
   300,603x = 450,076.50 × 450,076.50
4. Step 4: Simplify right side
   300,603x = 202,568,855,852.25
5. Step 5: Solve for x
   x = 202,568,855,852.25/300,603
6. Step 6: Final answer
   x = 673,875.03