Finding the Third Proportional to 39,499.75 and 55,890.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,499.75 : 55,890.75 = 55,890.75 : x
2. Step 2: Convert to fraction form
   39,499.75/55,890.75 = 55,890.75/x
3. Step 3: Cross multiply
   39,499.75x = 55,890.75 × 55,890.75
4. Step 4: Simplify right side
   39,499.75x = 3,123,775,935.56
5. Step 5: Solve for x
   x = 3,123,775,935.56/39,499.75
6. Step 6: Final answer
   x = 79,083.44