Finding the Third Proportional to 18,139.99 and 28,018.83

Step by Step Solution

1. Step 1: Write the proportion equation
   18,139.99 : 28,018.83 = 28,018.83 : x
2. Step 2: Convert to fraction form
   18,139.99/28,018.83 = 28,018.83/x
3. Step 3: Cross multiply
   18,139.99x = 28,018.83 × 28,018.83
4. Step 4: Simplify right side
   18,139.99x = 785,054,729.50
5. Step 5: Solve for x
   x = 785,054,729.50/18,139.99
6. Step 6: Final answer
   x = 43,277.57