Finding the Third Proportional to 30,187.69 and 39,707.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,187.69 : 39,707.72 = 39,707.72 : x
2. Step 2: Convert to fraction form
   30,187.69/39,707.72 = 39,707.72/x
3. Step 3: Cross multiply
   30,187.69x = 39,707.72 × 39,707.72
4. Step 4: Simplify right side
   30,187.69x = 1,576,702,928.33
5. Step 5: Solve for x
   x = 1,576,702,928.33/30,187.69
6. Step 6: Final answer
   x = 52,230.00