Finding the Third Proportional to 18,405.83 and 39,758.98

Step by Step Solution

1. Step 1: Write the proportion equation
   18,405.83 : 39,758.98 = 39,758.98 : x
2. Step 2: Convert to fraction form
   18,405.83/39,758.98 = 39,758.98/x
3. Step 3: Cross multiply
   18,405.83x = 39,758.98 × 39,758.98
4. Step 4: Simplify right side
   18,405.83x = 1,580,776,217.30
5. Step 5: Solve for x
   x = 1,580,776,217.30/18,405.83
6. Step 6: Final answer
   x = 85,884.56