Finding the Third Proportional to 39,309.75 and 55,444.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,309.75 : 55,444.50 = 55,444.50 : x
2. Step 2: Convert to fraction form
   39,309.75/55,444.50 = 55,444.50/x
3. Step 3: Cross multiply
   39,309.75x = 55,444.50 × 55,444.50
4. Step 4: Simplify right side
   39,309.75x = 3,074,092,580.25
5. Step 5: Solve for x
   x = 3,074,092,580.25/39,309.75
6. Step 6: Final answer
   x = 78,201.78