Finding the Third Proportional to 39,745.69 and 63,931.78

Step by Step Solution

1. Step 1: Write the proportion equation
   39,745.69 : 63,931.78 = 63,931.78 : x
2. Step 2: Convert to fraction form
   39,745.69/63,931.78 = 63,931.78/x
3. Step 3: Cross multiply
   39,745.69x = 63,931.78 × 63,931.78
4. Step 4: Simplify right side
   39,745.69x = 4,087,272,653.80
5. Step 5: Solve for x
   x = 4,087,272,653.80/39,745.69
6. Step 6: Final answer
   x = 102,835.63