Finding the Third Proportional to 39,039 and 55,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,039 : 55,780.50 = 55,780.50 : x
2. Step 2: Convert to fraction form
   39,039/55,780.50 = 55,780.50/x
3. Step 3: Cross multiply
   39,039x = 55,780.50 × 55,780.50
4. Step 4: Simplify right side
   39,039x = 3,111,464,180.25
5. Step 5: Solve for x
   x = 3,111,464,180.25/39,039
6. Step 6: Final answer
   x = 79,701.43