Finding the Third Proportional to 3,390.19 and 7,300.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390.19 : 7,300.69 = 7,300.69 : x
2. Step 2: Convert to fraction form
   3,390.19/7,300.69 = 7,300.69/x
3. Step 3: Cross multiply
   3,390.19x = 7,300.69 × 7,300.69
4. Step 4: Simplify right side
   3,390.19x = 53,300,037.97
5. Step 5: Solve for x
   x = 53,300,037.97/3,390.19
6. Step 6: Final answer
   x = 15,721.86