Finding the Third Proportional to 326,028 and 673,008

Step by Step Solution

1. Step 1: Write the proportion equation
   326,028 : 673,008 = 673,008 : x
2. Step 2: Convert to fraction form
   326,028/673,008 = 673,008/x
3. Step 3: Cross multiply
   326,028x = 673,008 × 673,008
4. Step 4: Simplify right side
   326,028x = 452,939,768,064
5. Step 5: Solve for x
   x = 452,939,768,064/326,028
6. Step 6: Final answer
   x = 1,389,266.47