Finding the Third Proportional to 150,538.69 and 220,155.56

Step by Step Solution

1. Step 1: Write the proportion equation
   150,538.69 : 220,155.56 = 220,155.56 : x
2. Step 2: Convert to fraction form
   150,538.69/220,155.56 = 220,155.56/x
3. Step 3: Cross multiply
   150,538.69x = 220,155.56 × 220,155.56
4. Step 4: Simplify right side
   150,538.69x = 48,468,471,699.69
5. Step 5: Solve for x
   x = 48,468,471,699.69/150,538.69
6. Step 6: Final answer
   x = 321,966.88