Finding the Third Proportional to 39,745.69 and 86,725.69

Step by Step Solution

1. Step 1: Write the proportion equation
   39,745.69 : 86,725.69 = 86,725.69 : x
2. Step 2: Convert to fraction form
   39,745.69/86,725.69 = 86,725.69/x
3. Step 3: Cross multiply
   39,745.69x = 86,725.69 × 86,725.69
4. Step 4: Simplify right side
   39,745.69x = 7,521,344,872.35
5. Step 5: Solve for x
   x = 7,521,344,872.35/39,745.69
6. Step 6: Final answer
   x = 189,236.75