Finding the Third Proportional to 38,880.38 and 55,005.75

Step by Step Solution

1. Step 1: Write the proportion equation
   38,880.38 : 55,005.75 = 55,005.75 : x
2. Step 2: Convert to fraction form
   38,880.38/55,005.75 = 55,005.75/x
3. Step 3: Cross multiply
   38,880.38x = 55,005.75 × 55,005.75
4. Step 4: Simplify right side
   38,880.38x = 3,025,632,533.06
5. Step 5: Solve for x
   x = 3,025,632,533.06/38,880.38
6. Step 6: Final answer
   x = 77,819.02