Finding the Third Proportional to 18,493.31 and 39,449.53

Step by Step Solution

1. Step 1: Write the proportion equation
   18,493.31 : 39,449.53 = 39,449.53 : x
2. Step 2: Convert to fraction form
   18,493.31/39,449.53 = 39,449.53/x
3. Step 3: Cross multiply
   18,493.31x = 39,449.53 × 39,449.53
4. Step 4: Simplify right side
   18,493.31x = 1,556,265,515.84
5. Step 5: Solve for x
   x = 1,556,265,515.84/18,493.31
6. Step 6: Final answer
   x = 84,152.88