Finding the Third Proportional to 18,486.98 and 35,743.78

Step by Step Solution

1. Step 1: Write the proportion equation
   18,486.98 : 35,743.78 = 35,743.78 : x
2. Step 2: Convert to fraction form
   18,486.98/35,743.78 = 35,743.78/x
3. Step 3: Cross multiply
   18,486.98x = 35,743.78 × 35,743.78
4. Step 4: Simplify right side
   18,486.98x = 1,277,617,898.05
5. Step 5: Solve for x
   x = 1,277,617,898.05/18,486.98
6. Step 6: Final answer
   x = 69,109.05