Finding the Third Proportional to 5,218.31 and 10,868.06

Step by Step Solution

1. Step 1: Write the proportion equation
   5,218.31 : 10,868.06 = 10,868.06 : x
2. Step 2: Convert to fraction form
   5,218.31/10,868.06 = 10,868.06/x
3. Step 3: Cross multiply
   5,218.31x = 10,868.06 × 10,868.06
4. Step 4: Simplify right side
   5,218.31x = 118,114,782.50
5. Step 5: Solve for x
   x = 118,114,782.50/5,218.31
6. Step 6: Final answer
   x = 22,634.67