Finding the Third Proportional to 3,478.13 and 7,243.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,478.13 : 7,243.88 = 7,243.88 : x
2. Step 2: Convert to fraction form
   3,478.13/7,243.88 = 7,243.88/x
3. Step 3: Cross multiply
   3,478.13x = 7,243.88 × 7,243.88
4. Step 4: Simplify right side
   3,478.13x = 52,473,725.02
5. Step 5: Solve for x
   x = 52,473,725.02/3,478.13
6. Step 6: Final answer
   x = 15,086.79