Finding the Third Proportional to 383,404 and 806,468

Step by Step Solution

1. Step 1: Write the proportion equation
   383,404 : 806,468 = 806,468 : x
2. Step 2: Convert to fraction form
   383,404/806,468 = 806,468/x
3. Step 3: Cross multiply
   383,404x = 806,468 × 806,468
4. Step 4: Simplify right side
   383,404x = 650,390,635,024
5. Step 5: Solve for x
   x = 650,390,635,024/383,404
6. Step 6: Final answer
   x = 1,696,358.50