Finding the Third Proportional to 325,399.50 and 666,654

Step by Step Solution

1. Step 1: Write the proportion equation
   325,399.50 : 666,654 = 666,654 : x
2. Step 2: Convert to fraction form
   325,399.50/666,654 = 666,654/x
3. Step 3: Cross multiply
   325,399.50x = 666,654 × 666,654
4. Step 4: Simplify right side
   325,399.50x = 444,427,555,716
5. Step 5: Solve for x
   x = 444,427,555,716/325,399.50
6. Step 6: Final answer
   x = 1,365,790.53