Finding the Third Proportional to 52,869 and 80,978

Step by Step Solution

1. Step 1: Write the proportion equation
   52,869 : 80,978 = 80,978 : x
2. Step 2: Convert to fraction form
   52,869/80,978 = 80,978/x
3. Step 3: Cross multiply
   52,869x = 80,978 × 80,978
4. Step 4: Simplify right side
   52,869x = 6,557,436,484
5. Step 5: Solve for x
   x = 6,557,436,484/52,869
6. Step 6: Final answer
   x = 124,031.79