Finding the Third Proportional to 3,423.94 and 8,225.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,423.94 : 8,225.72 = 8,225.72 : x
2. Step 2: Convert to fraction form
   3,423.94/8,225.72 = 8,225.72/x
3. Step 3: Cross multiply
   3,423.94x = 8,225.72 × 8,225.72
4. Step 4: Simplify right side
   3,423.94x = 67,662,448.95
5. Step 5: Solve for x
   x = 67,662,448.95/3,423.94
6. Step 6: Final answer
   x = 19,761.59