Finding the Third Proportional to 39,447 and 54,229.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,447 : 54,229.50 = 54,229.50 : x
2. Step 2: Convert to fraction form
   39,447/54,229.50 = 54,229.50/x
3. Step 3: Cross multiply
   39,447x = 54,229.50 × 54,229.50
4. Step 4: Simplify right side
   39,447x = 2,940,838,670.25
5. Step 5: Solve for x
   x = 2,940,838,670.25/39,447
6. Step 6: Final answer
   x = 74,551.64