Finding the Third Proportional to 21,679.50 and 34,356.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,679.50 : 34,356.75 = 34,356.75 : x
2. Step 2: Convert to fraction form
   21,679.50/34,356.75 = 34,356.75/x
3. Step 3: Cross multiply
   21,679.50x = 34,356.75 × 34,356.75
4. Step 4: Simplify right side
   21,679.50x = 1,180,386,270.56
5. Step 5: Solve for x
   x = 1,180,386,270.56/21,679.50
6. Step 6: Final answer
   x = 54,447.12