Finding the Third Proportional to 39,611.53 and 53,949.80

Step by Step Solution

1. Step 1: Write the proportion equation
   39,611.53 : 53,949.80 = 53,949.80 : x
2. Step 2: Convert to fraction form
   39,611.53/53,949.80 = 53,949.80/x
3. Step 3: Cross multiply
   39,611.53x = 53,949.80 × 53,949.80
4. Step 4: Simplify right side
   39,611.53x = 2,910,580,582.85
5. Step 5: Solve for x
   x = 2,910,580,582.85/39,611.53
6. Step 6: Final answer
   x = 73,478.11