Finding the Third Proportional to 5,369.31 and 10,889.63

Step by Step Solution

1. Step 1: Write the proportion equation
   5,369.31 : 10,889.63 = 10,889.63 : x
2. Step 2: Convert to fraction form
   5,369.31/10,889.63 = 10,889.63/x
3. Step 3: Cross multiply
   5,369.31x = 10,889.63 × 10,889.63
4. Step 4: Simplify right side
   5,369.31x = 118,583,932.64
5. Step 5: Solve for x
   x = 118,583,932.64/5,369.31
6. Step 6: Final answer
   x = 22,085.50