Finding the Third Proportional to 36,300 and 39,180

Step by Step Solution

1. Step 1: Write the proportion equation
   36,300 : 39,180 = 39,180 : x
2. Step 2: Convert to fraction form
   36,300/39,180 = 39,180/x
3. Step 3: Cross multiply
   36,300x = 39,180 × 39,180
4. Step 4: Simplify right side
   36,300x = 1,535,072,400
5. Step 5: Solve for x
   x = 1,535,072,400/36,300
6. Step 6: Final answer
   x = 42,288.50