Finding the Third Proportional to 39,300.75 and 55,556.44

Step by Step Solution

1. Step 1: Write the proportion equation
   39,300.75 : 55,556.44 = 55,556.44 : x
2. Step 2: Convert to fraction form
   39,300.75/55,556.44 = 55,556.44/x
3. Step 3: Cross multiply
   39,300.75x = 55,556.44 × 55,556.44
4. Step 4: Simplify right side
   39,300.75x = 3,086,517,747.69
5. Step 5: Solve for x
   x = 3,086,517,747.69/39,300.75
6. Step 6: Final answer
   x = 78,535.85