Finding the Third Proportional to 3,428.50 and 7,390

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428.50 : 7,390 = 7,390 : x
2. Step 2: Convert to fraction form
   3,428.50/7,390 = 7,390/x
3. Step 3: Cross multiply
   3,428.50x = 7,390 × 7,390
4. Step 4: Simplify right side
   3,428.50x = 54,612,100
5. Step 5: Solve for x
   x = 54,612,100/3,428.50
6. Step 6: Final answer
   x = 15,928.86