Finding the Third Proportional to 105,486 and 140,911

Step by Step Solution

1. Step 1: Write the proportion equation
   105,486 : 140,911 = 140,911 : x
2. Step 2: Convert to fraction form
   105,486/140,911 = 140,911/x
3. Step 3: Cross multiply
   105,486x = 140,911 × 140,911
4. Step 4: Simplify right side
   105,486x = 19,855,909,921
5. Step 5: Solve for x
   x = 19,855,909,921/105,486
6. Step 6: Final answer
   x = 188,232.66