Finding the Third Proportional to 325,363 and 666,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   325,363 : 666,581.50 = 666,581.50 : x
2. Step 2: Convert to fraction form
   325,363/666,581.50 = 666,581.50/x
3. Step 3: Cross multiply
   325,363x = 666,581.50 × 666,581.50
4. Step 4: Simplify right side
   325,363x = 444,330,896,142.25
5. Step 5: Solve for x
   x = 444,330,896,142.25/325,363
6. Step 6: Final answer
   x = 1,365,646.67