Finding the Third Proportional to 5,148.56 and 10,980.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,148.56 : 10,980.56 = 10,980.56 : x
2. Step 2: Convert to fraction form
   5,148.56/10,980.56 = 10,980.56/x
3. Step 3: Cross multiply
   5,148.56x = 10,980.56 × 10,980.56
4. Step 4: Simplify right side
   5,148.56x = 120,572,752.82
5. Step 5: Solve for x
   x = 120,572,752.82/5,148.56
6. Step 6: Final answer
   x = 23,418.72