Finding the Third Proportional to 78,462.75 and 100,744

Step by Step Solution

1. Step 1: Write the proportion equation
   78,462.75 : 100,744 = 100,744 : x
2. Step 2: Convert to fraction form
   78,462.75/100,744 = 100,744/x
3. Step 3: Cross multiply
   78,462.75x = 100,744 × 100,744
4. Step 4: Simplify right side
   78,462.75x = 10,149,353,536
5. Step 5: Solve for x
   x = 10,149,353,536/78,462.75
6. Step 6: Final answer
   x = 129,352.51