Finding the Third Proportional to 354,198 and 764,371.50

Step by Step Solution

1. Step 1: Write the proportion equation
   354,198 : 764,371.50 = 764,371.50 : x
2. Step 2: Convert to fraction form
   354,198/764,371.50 = 764,371.50/x
3. Step 3: Cross multiply
   354,198x = 764,371.50 × 764,371.50
4. Step 4: Simplify right side
   354,198x = 584,263,790,012.25
5. Step 5: Solve for x
   x = 584,263,790,012.25/354,198
6. Step 6: Final answer
   x = 1,649,540.06