Finding the Third Proportional to 21,280.38 and 34,288.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,280.38 : 34,288.39 = 34,288.39 : x
2. Step 2: Convert to fraction form
   21,280.38/34,288.39 = 34,288.39/x
3. Step 3: Cross multiply
   21,280.38x = 34,288.39 × 34,288.39
4. Step 4: Simplify right side
   21,280.38x = 1,175,693,798.62
5. Step 5: Solve for x
   x = 1,175,693,798.62/21,280.38
6. Step 6: Final answer
   x = 55,247.79