Finding the Third Proportional to 8,520.89 and 17,824.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,520.89 : 17,824.78 = 17,824.78 : x
2. Step 2: Convert to fraction form
   8,520.89/17,824.78 = 17,824.78/x
3. Step 3: Cross multiply
   8,520.89x = 17,824.78 × 17,824.78
4. Step 4: Simplify right side
   8,520.89x = 317,722,826.61
5. Step 5: Solve for x
   x = 317,722,826.61/8,520.89
6. Step 6: Final answer
   x = 37,287.51