Finding the Third Proportional to 6,290 and 10,447

Step by Step Solution

1. Step 1: Write the proportion equation
   6,290 : 10,447 = 10,447 : x
2. Step 2: Convert to fraction form
   6,290/10,447 = 10,447/x
3. Step 3: Cross multiply
   6,290x = 10,447 × 10,447
4. Step 4: Simplify right side
   6,290x = 109,139,809
5. Step 5: Solve for x
   x = 109,139,809/6,290
6. Step 6: Final answer
   x = 17,351.32