Finding the Third Proportional to 39,796.50 and 55,788.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,796.50 : 55,788.75 = 55,788.75 : x
2. Step 2: Convert to fraction form
   39,796.50/55,788.75 = 55,788.75/x
3. Step 3: Cross multiply
   39,796.50x = 55,788.75 × 55,788.75
4. Step 4: Simplify right side
   39,796.50x = 3,112,384,626.56
5. Step 5: Solve for x
   x = 3,112,384,626.56/39,796.50
6. Step 6: Final answer
   x = 78,207.50