Finding the Third Proportional to 10,977 and 21,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,977 : 21,400.50 = 21,400.50 : x
2. Step 2: Convert to fraction form
   10,977/21,400.50 = 21,400.50/x
3. Step 3: Cross multiply
   10,977x = 21,400.50 × 21,400.50
4. Step 4: Simplify right side
   10,977x = 457,981,400.25
5. Step 5: Solve for x
   x = 457,981,400.25/10,977
6. Step 6: Final answer
   x = 41,721.91