Finding the Third Proportional to 39,538.13 and 55,783.69

Step by Step Solution

1. Step 1: Write the proportion equation
   39,538.13 : 55,783.69 = 55,783.69 : x
2. Step 2: Convert to fraction form
   39,538.13/55,783.69 = 55,783.69/x
3. Step 3: Cross multiply
   39,538.13x = 55,783.69 × 55,783.69
4. Step 4: Simplify right side
   39,538.13x = 3,111,819,791.10
5. Step 5: Solve for x
   x = 3,111,819,791.10/39,538.13
6. Step 6: Final answer
   x = 78,704.28