Finding the Third Proportional to 296,430 and 443,831.25

Step by Step Solution

1. Step 1: Write the proportion equation
   296,430 : 443,831.25 = 443,831.25 : x
2. Step 2: Convert to fraction form
   296,430/443,831.25 = 443,831.25/x
3. Step 3: Cross multiply
   296,430x = 443,831.25 × 443,831.25
4. Step 4: Simplify right side
   296,430x = 196,986,178,476.56
5. Step 5: Solve for x
   x = 196,986,178,476.56/296,430
6. Step 6: Final answer
   x = 664,528.48