Finding the Third Proportional to 55,221.75 and 75,223.69

Step by Step Solution

1. Step 1: Write the proportion equation
   55,221.75 : 75,223.69 = 75,223.69 : x
2. Step 2: Convert to fraction form
   55,221.75/75,223.69 = 75,223.69/x
3. Step 3: Cross multiply
   55,221.75x = 75,223.69 × 75,223.69
4. Step 4: Simplify right side
   55,221.75x = 5,658,603,161.10
5. Step 5: Solve for x
   x = 5,658,603,161.10/55,221.75
6. Step 6: Final answer
   x = 102,470.55