Finding the Third Proportional to 187,866 and 388,152

Step by Step Solution

1. Step 1: Write the proportion equation
   187,866 : 388,152 = 388,152 : x
2. Step 2: Convert to fraction form
   187,866/388,152 = 388,152/x
3. Step 3: Cross multiply
   187,866x = 388,152 × 388,152
4. Step 4: Simplify right side
   187,866x = 150,661,975,104
5. Step 5: Solve for x
   x = 150,661,975,104/187,866
6. Step 6: Final answer
   x = 801,965.10