Finding the Third Proportional to 80,449 and 105,791

Step by Step Solution

1. Step 1: Write the proportion equation
   80,449 : 105,791 = 105,791 : x
2. Step 2: Convert to fraction form
   80,449/105,791 = 105,791/x
3. Step 3: Cross multiply
   80,449x = 105,791 × 105,791
4. Step 4: Simplify right side
   80,449x = 11,191,735,681
5. Step 5: Solve for x
   x = 11,191,735,681/80,449
6. Step 6: Final answer
   x = 139,115.91