Finding the Third Proportional to 8,404 and 19,810

Step by Step Solution

1. Step 1: Write the proportion equation
   8,404 : 19,810 = 19,810 : x
2. Step 2: Convert to fraction form
   8,404/19,810 = 19,810/x
3. Step 3: Cross multiply
   8,404x = 19,810 × 19,810
4. Step 4: Simplify right side
   8,404x = 392,436,100
5. Step 5: Solve for x
   x = 392,436,100/8,404
6. Step 6: Final answer
   x = 46,696.35