Finding the Third Proportional to 4,827.94 and 10,420.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,827.94 : 10,420.31 = 10,420.31 : x
2. Step 2: Convert to fraction form
   4,827.94/10,420.31 = 10,420.31/x
3. Step 3: Cross multiply
   4,827.94x = 10,420.31 × 10,420.31
4. Step 4: Simplify right side
   4,827.94x = 108,582,912.60
5. Step 5: Solve for x
   x = 108,582,912.60/4,827.94
6. Step 6: Final answer
   x = 22,490.54