Finding the Third Proportional to 92,831 and 139,451

Step by Step Solution

1. Step 1: Write the proportion equation
   92,831 : 139,451 = 139,451 : x
2. Step 2: Convert to fraction form
   92,831/139,451 = 139,451/x
3. Step 3: Cross multiply
   92,831x = 139,451 × 139,451
4. Step 4: Simplify right side
   92,831x = 19,446,581,401
5. Step 5: Solve for x
   x = 19,446,581,401/92,831
6. Step 6: Final answer
   x = 209,483.70