Finding the Third Proportional to 18,105.40 and 27,978.22

Step by Step Solution

1. Step 1: Write the proportion equation
   18,105.40 : 27,978.22 = 27,978.22 : x
2. Step 2: Convert to fraction form
   18,105.40/27,978.22 = 27,978.22/x
3. Step 3: Cross multiply
   18,105.40x = 27,978.22 × 27,978.22
4. Step 4: Simplify right side
   18,105.40x = 782,780,943.00
5. Step 5: Solve for x
   x = 782,780,943.00/18,105.40
6. Step 6: Final answer
   x = 43,234.67