Finding the Third Proportional to 17,857.50 and 38,790.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,857.50 : 38,790.75 = 38,790.75 : x
2. Step 2: Convert to fraction form
   17,857.50/38,790.75 = 38,790.75/x
3. Step 3: Cross multiply
   17,857.50x = 38,790.75 × 38,790.75
4. Step 4: Simplify right side
   17,857.50x = 1,504,722,285.56
5. Step 5: Solve for x
   x = 1,504,722,285.56/17,857.50
6. Step 6: Final answer
   x = 84,262.76