Finding the Third Proportional to 283,600.50 and 439,344

Step by Step Solution

1. Step 1: Write the proportion equation
   283,600.50 : 439,344 = 439,344 : x
2. Step 2: Convert to fraction form
   283,600.50/439,344 = 439,344/x
3. Step 3: Cross multiply
   283,600.50x = 439,344 × 439,344
4. Step 4: Simplify right side
   283,600.50x = 193,023,150,336
5. Step 5: Solve for x
   x = 193,023,150,336/283,600.50
6. Step 6: Final answer
   x = 680,616.40