Finding the Third Proportional to 326,606 and 666,333.50

Step by Step Solution

1. Step 1: Write the proportion equation
   326,606 : 666,333.50 = 666,333.50 : x
2. Step 2: Convert to fraction form
   326,606/666,333.50 = 666,333.50/x
3. Step 3: Cross multiply
   326,606x = 666,333.50 × 666,333.50
4. Step 4: Simplify right side
   326,606x = 444,000,333,222.25
5. Step 5: Solve for x
   x = 444,000,333,222.25/326,606
6. Step 6: Final answer
   x = 1,359,437.16