Finding the Third Proportional to 326,607 and 666,336

Step by Step Solution

1. Step 1: Write the proportion equation
   326,607 : 666,336 = 666,336 : x
2. Step 2: Convert to fraction form
   326,607/666,336 = 666,336/x
3. Step 3: Cross multiply
   326,607x = 666,336 × 666,336
4. Step 4: Simplify right side
   326,607x = 444,003,664,896
5. Step 5: Solve for x
   x = 444,003,664,896/326,607
6. Step 6: Final answer
   x = 1,359,443.20