Finding the Third Proportional to 326,030 and 673,012

Step by Step Solution

1. Step 1: Write the proportion equation
   326,030 : 673,012 = 673,012 : x
2. Step 2: Convert to fraction form
   326,030/673,012 = 673,012/x
3. Step 3: Cross multiply
   326,030x = 673,012 × 673,012
4. Step 4: Simplify right side
   326,030x = 452,945,152,144
5. Step 5: Solve for x
   x = 452,945,152,144/326,030
6. Step 6: Final answer
   x = 1,389,274.46