Finding the Third Proportional to 444,213 and 670,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   444,213 : 670,315.50 = 670,315.50 : x
2. Step 2: Convert to fraction form
   444,213/670,315.50 = 670,315.50/x
3. Step 3: Cross multiply
   444,213x = 670,315.50 × 670,315.50
4. Step 4: Simplify right side
   444,213x = 449,322,869,540.25
5. Step 5: Solve for x
   x = 449,322,869,540.25/444,213
6. Step 6: Final answer
   x = 1,011,503.20