Finding the Third Proportional to 444,378 and 670,489.50

Step by Step Solution

1. Step 1: Write the proportion equation
   444,378 : 670,489.50 = 670,489.50 : x
2. Step 2: Convert to fraction form
   444,378/670,489.50 = 670,489.50/x
3. Step 3: Cross multiply
   444,378x = 670,489.50 × 670,489.50
4. Step 4: Simplify right side
   444,378x = 449,556,169,610.25
5. Step 5: Solve for x
   x = 449,556,169,610.25/444,378
6. Step 6: Final answer
   x = 1,011,652.62