Finding the Third Proportional to 250,779 and 388,744.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,779 : 388,744.50 = 388,744.50 : x
2. Step 2: Convert to fraction form
   250,779/388,744.50 = 388,744.50/x
3. Step 3: Cross multiply
   250,779x = 388,744.50 × 388,744.50
4. Step 4: Simplify right side
   250,779x = 151,122,286,280.25
5. Step 5: Solve for x
   x = 151,122,286,280.25/250,779
6. Step 6: Final answer
   x = 602,611.41