Finding the Third Proportional to 619,216.50 and 871,992

Step by Step Solution

1. Step 1: Write the proportion equation
   619,216.50 : 871,992 = 871,992 : x
2. Step 2: Convert to fraction form
   619,216.50/871,992 = 871,992/x
3. Step 3: Cross multiply
   619,216.50x = 871,992 × 871,992
4. Step 4: Simplify right side
   619,216.50x = 760,370,048,064
5. Step 5: Solve for x
   x = 760,370,048,064/619,216.50
6. Step 6: Final answer
   x = 1,227,955.08