Finding the Third Proportional to 603,099 and 819,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   603,099 : 819,067.50 = 819,067.50 : x
2. Step 2: Convert to fraction form
   603,099/819,067.50 = 819,067.50/x
3. Step 3: Cross multiply
   603,099x = 819,067.50 × 819,067.50
4. Step 4: Simplify right side
   603,099x = 670,871,569,556.25
5. Step 5: Solve for x
   x = 670,871,569,556.25/603,099
6. Step 6: Final answer
   x = 1,112,373.87