Finding the Third Proportional to 12,442.88 and 18,618.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,442.88 : 18,618.38 = 18,618.38 : x
2. Step 2: Convert to fraction form
   12,442.88/18,618.38 = 18,618.38/x
3. Step 3: Cross multiply
   12,442.88x = 18,618.38 × 18,618.38
4. Step 4: Simplify right side
   12,442.88x = 346,643,887.64
5. Step 5: Solve for x
   x = 346,643,887.64/12,442.88
6. Step 6: Final answer
   x = 27,858.83