Finding the Third Proportional to 283,320 and 616,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   283,320 : 616,486.50 = 616,486.50 : x
2. Step 2: Convert to fraction form
   283,320/616,486.50 = 616,486.50/x
3. Step 3: Cross multiply
   283,320x = 616,486.50 × 616,486.50
4. Step 4: Simplify right side
   283,320x = 380,055,604,682.25
5. Step 5: Solve for x
   x = 380,055,604,682.25/283,320
6. Step 6: Final answer
   x = 1,341,435.85