Finding the Third Proportional to 39,578.63 and 84,693.38

Step by Step Solution

1. Step 1: Write the proportion equation
   39,578.63 : 84,693.38 = 84,693.38 : x
2. Step 2: Convert to fraction form
   39,578.63/84,693.38 = 84,693.38/x
3. Step 3: Cross multiply
   39,578.63x = 84,693.38 × 84,693.38
4. Step 4: Simplify right side
   39,578.63x = 7,172,967,768.89
5. Step 5: Solve for x
   x = 7,172,967,768.89/39,578.63
6. Step 6: Final answer
   x = 181,233.37