Finding the Third Proportional to 18,289.69 and 39,308.06

Step by Step Solution

1. Step 1: Write the proportion equation
   18,289.69 : 39,308.06 = 39,308.06 : x
2. Step 2: Convert to fraction form
   18,289.69/39,308.06 = 39,308.06/x
3. Step 3: Cross multiply
   18,289.69x = 39,308.06 × 39,308.06
4. Step 4: Simplify right side
   18,289.69x = 1,545,123,777.50
5. Step 5: Solve for x
   x = 1,545,123,777.50/18,289.69
6. Step 6: Final answer
   x = 84,480.60