Finding the Third Proportional to 5,108.06 and 10,471.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,108.06 : 10,471.78 = 10,471.78 : x
2. Step 2: Convert to fraction form
   5,108.06/10,471.78 = 10,471.78/x
3. Step 3: Cross multiply
   5,108.06x = 10,471.78 × 10,471.78
4. Step 4: Simplify right side
   5,108.06x = 109,658,202.55
5. Step 5: Solve for x
   x = 109,658,202.55/5,108.06
6. Step 6: Final answer
   x = 21,467.67