Finding the Third Proportional to 187,715 and 388,737.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187,715 : 388,737.50 = 388,737.50 : x
2. Step 2: Convert to fraction form
   187,715/388,737.50 = 388,737.50/x
3. Step 3: Cross multiply
   187,715x = 388,737.50 × 388,737.50
4. Step 4: Simplify right side
   187,715x = 151,116,843,906.25
5. Step 5: Solve for x
   x = 151,116,843,906.25/187,715
6. Step 6: Final answer
   x = 805,033.40