Finding the Third Proportional to 619,205.77 and 871,986.52

Step by Step Solution

1. Step 1: Write the proportion equation
   619,205.77 : 871,986.52 = 871,986.52 : x
2. Step 2: Convert to fraction form
   619,205.77/871,986.52 = 871,986.52/x
3. Step 3: Cross multiply
   619,205.77x = 871,986.52 × 871,986.52
4. Step 4: Simplify right side
   619,205.77x = 760,360,483,431.83
5. Step 5: Solve for x
   x = 760,360,483,431.83/619,205.77
6. Step 6: Final answer
   x = 1,227,960.92