Finding the Third Proportional to 383,109 and 805,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   383,109 : 805,915.50 = 805,915.50 : x
2. Step 2: Convert to fraction form
   383,109/805,915.50 = 805,915.50/x
3. Step 3: Cross multiply
   383,109x = 805,915.50 × 805,915.50
4. Step 4: Simplify right side
   383,109x = 649,499,793,140.25
5. Step 5: Solve for x
   x = 649,499,793,140.25/383,109
6. Step 6: Final answer
   x = 1,695,339.43