Finding the Third Proportional to 39,078.38 and 84,081.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,078.38 : 84,081.75 = 84,081.75 : x
2. Step 2: Convert to fraction form
   39,078.38/84,081.75 = 84,081.75/x
3. Step 3: Cross multiply
   39,078.38x = 84,081.75 × 84,081.75
4. Step 4: Simplify right side
   39,078.38x = 7,069,740,683.06
5. Step 5: Solve for x
   x = 7,069,740,683.06/39,078.38
6. Step 6: Final answer
   x = 180,911.84