Finding the Third Proportional to 188,888 and 408,222.75

Step by Step Solution

1. Step 1: Write the proportion equation
   188,888 : 408,222.75 = 408,222.75 : x
2. Step 2: Convert to fraction form
   188,888/408,222.75 = 408,222.75/x
3. Step 3: Cross multiply
   188,888x = 408,222.75 × 408,222.75
4. Step 4: Simplify right side
   188,888x = 166,645,813,617.56
5. Step 5: Solve for x
   x = 166,645,813,617.56/188,888
6. Step 6: Final answer
   x = 882,246.69