Finding the Third Proportional to 18,085.46 and 39,189.45

Step by Step Solution

1. Step 1: Write the proportion equation
   18,085.46 : 39,189.45 = 39,189.45 : x
2. Step 2: Convert to fraction form
   18,085.46/39,189.45 = 39,189.45/x
3. Step 3: Cross multiply
   18,085.46x = 39,189.45 × 39,189.45
4. Step 4: Simplify right side
   18,085.46x = 1,535,812,623.90
5. Step 5: Solve for x
   x = 1,535,812,623.90/18,085.46
6. Step 6: Final answer
   x = 84,919.72