Finding the Third Proportional to 551,134.50 and 843,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   551,134.50 : 843,103.50 = 843,103.50 : x
2. Step 2: Convert to fraction form
   551,134.50/843,103.50 = 843,103.50/x
3. Step 3: Cross multiply
   551,134.50x = 843,103.50 × 843,103.50
4. Step 4: Simplify right side
   551,134.50x = 710,823,511,712.25
5. Step 5: Solve for x
   x = 710,823,511,712.25/551,134.50
6. Step 6: Final answer
   x = 1,289,745.99