Finding the Third Proportional to 18,418.69 and 28,156.78

Step by Step Solution

1. Step 1: Write the proportion equation
   18,418.69 : 28,156.78 = 28,156.78 : x
2. Step 2: Convert to fraction form
   18,418.69/28,156.78 = 28,156.78/x
3. Step 3: Cross multiply
   18,418.69x = 28,156.78 × 28,156.78
4. Step 4: Simplify right side
   18,418.69x = 792,804,330.36
5. Step 5: Solve for x
   x = 792,804,330.36/18,418.69
6. Step 6: Final answer
   x = 43,043.48