Finding the Third Proportional to 326,664 and 443,328

Step by Step Solution

1. Step 1: Write the proportion equation
   326,664 : 443,328 = 443,328 : x
2. Step 2: Convert to fraction form
   326,664/443,328 = 443,328/x
3. Step 3: Cross multiply
   326,664x = 443,328 × 443,328
4. Step 4: Simplify right side
   326,664x = 196,539,715,584
5. Step 5: Solve for x
   x = 196,539,715,584/326,664
6. Step 6: Final answer
   x = 601,657.10