Finding the Third Proportional to 301,212 and 451,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,212 : 451,831.50 = 451,831.50 : x
2. Step 2: Convert to fraction form
   301,212/451,831.50 = 451,831.50/x
3. Step 3: Cross multiply
   301,212x = 451,831.50 × 451,831.50
4. Step 4: Simplify right side
   301,212x = 204,151,704,392.25
5. Step 5: Solve for x
   x = 204,151,704,392.25/301,212
6. Step 6: Final answer
   x = 677,767.50