Finding the Third Proportional to 21,406.50 and 34,206.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,406.50 : 34,206.75 = 34,206.75 : x
2. Step 2: Convert to fraction form
   21,406.50/34,206.75 = 34,206.75/x
3. Step 3: Cross multiply
   21,406.50x = 34,206.75 × 34,206.75
4. Step 4: Simplify right side
   21,406.50x = 1,170,101,745.56
5. Step 5: Solve for x
   x = 1,170,101,745.56/21,406.50
6. Step 6: Final answer
   x = 54,661.05