Finding the Third Proportional to 7,118.44 and 10,638.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,118.44 : 10,638.56 = 10,638.56 : x
2. Step 2: Convert to fraction form
   7,118.44/10,638.56 = 10,638.56/x
3. Step 3: Cross multiply
   7,118.44x = 10,638.56 × 10,638.56
4. Step 4: Simplify right side
   7,118.44x = 113,179,012.07
5. Step 5: Solve for x
   x = 113,179,012.07/7,118.44
6. Step 6: Final answer
   x = 15,899.42