Finding the Third Proportional to 21,778.31 and 47,520.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,778.31 : 47,520.56 = 47,520.56 : x
2. Step 2: Convert to fraction form
   21,778.31/47,520.56 = 47,520.56/x
3. Step 3: Cross multiply
   21,778.31x = 47,520.56 × 47,520.56
4. Step 4: Simplify right side
   21,778.31x = 2,258,203,860.32
5. Step 5: Solve for x
   x = 2,258,203,860.32/21,778.31
6. Step 6: Final answer
   x = 103,690.49