Finding the Third Proportional to 336,699 and 726,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   336,699 : 726,808.50 = 726,808.50 : x
2. Step 2: Convert to fraction form
   336,699/726,808.50 = 726,808.50/x
3. Step 3: Cross multiply
   336,699x = 726,808.50 × 726,808.50
4. Step 4: Simplify right side
   336,699x = 528,250,595,672.25
5. Step 5: Solve for x
   x = 528,250,595,672.25/336,699
6. Step 6: Final answer
   x = 1,568,910.50