Finding the Third Proportional to 8,516 and 19,789

Step by Step Solution

1. Step 1: Write the proportion equation
   8,516 : 19,789 = 19,789 : x
2. Step 2: Convert to fraction form
   8,516/19,789 = 19,789/x
3. Step 3: Cross multiply
   8,516x = 19,789 × 19,789
4. Step 4: Simplify right side
   8,516x = 391,604,521
5. Step 5: Solve for x
   x = 391,604,521/8,516
6. Step 6: Final answer
   x = 45,984.56