Finding the Third Proportional to 326,171.50 and 674,717.03

Step by Step Solution

1. Step 1: Write the proportion equation
   326,171.50 : 674,717.03 = 674,717.03 : x
2. Step 2: Convert to fraction form
   326,171.50/674,717.03 = 674,717.03/x
3. Step 3: Cross multiply
   326,171.50x = 674,717.03 × 674,717.03
4. Step 4: Simplify right side
   326,171.50x = 455,243,066,987.59
5. Step 5: Solve for x
   x = 455,243,066,987.59/326,171.50
6. Step 6: Final answer
   x = 1,395,716.89