Finding the Third Proportional to 383,439 and 806,530.50

Step by Step Solution

1. Step 1: Write the proportion equation
   383,439 : 806,530.50 = 806,530.50 : x
2. Step 2: Convert to fraction form
   383,439/806,530.50 = 806,530.50/x
3. Step 3: Cross multiply
   383,439x = 806,530.50 × 806,530.50
4. Step 4: Simplify right side
   383,439x = 650,491,447,430.25
5. Step 5: Solve for x
   x = 650,491,447,430.25/383,439
6. Step 6: Final answer
   x = 1,696,466.58