Finding the Third Proportional to 17,518.78 and 35,743.78

Step by Step Solution

1. Step 1: Write the proportion equation
   17,518.78 : 35,743.78 = 35,743.78 : x
2. Step 2: Convert to fraction form
   17,518.78/35,743.78 = 35,743.78/x
3. Step 3: Cross multiply
   17,518.78x = 35,743.78 × 35,743.78
4. Step 4: Simplify right side
   17,518.78x = 1,277,617,898.05
5. Step 5: Solve for x
   x = 1,277,617,898.05/17,518.78
6. Step 6: Final answer
   x = 72,928.47