Finding the Third Proportional to 3,902.63 and 8,371.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902.63 : 8,371.69 = 8,371.69 : x
2. Step 2: Convert to fraction form
   3,902.63/8,371.69 = 8,371.69/x
3. Step 3: Cross multiply
   3,902.63x = 8,371.69 × 8,371.69
4. Step 4: Simplify right side
   3,902.63x = 70,085,151.60
5. Step 5: Solve for x
   x = 70,085,151.60/3,902.63
6. Step 6: Final answer
   x = 17,958.46