Finding the Third Proportional to 10,878 and 14,631

Step by Step Solution

1. Step 1: Write the proportion equation
   10,878 : 14,631 = 14,631 : x
2. Step 2: Convert to fraction form
   10,878/14,631 = 14,631/x
3. Step 3: Cross multiply
   10,878x = 14,631 × 14,631
4. Step 4: Simplify right side
   10,878x = 214,066,161
5. Step 5: Solve for x
   x = 214,066,161/10,878
6. Step 6: Final answer
   x = 19,678.82