Finding the Third Proportional to 3,398.63 and 7,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,398.63 : 7,168.50 = 7,168.50 : x
2. Step 2: Convert to fraction form
   3,398.63/7,168.50 = 7,168.50/x
3. Step 3: Cross multiply
   3,398.63x = 7,168.50 × 7,168.50
4. Step 4: Simplify right side
   3,398.63x = 51,387,392.25
5. Step 5: Solve for x
   x = 51,387,392.25/3,398.63
6. Step 6: Final answer
   x = 15,120.05