Finding the Third Proportional to 250,578 and 388,597.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,578 : 388,597.50 = 388,597.50 : x
2. Step 2: Convert to fraction form
   250,578/388,597.50 = 388,597.50/x
3. Step 3: Cross multiply
   250,578x = 388,597.50 × 388,597.50
4. Step 4: Simplify right side
   250,578x = 151,008,017,006.25
5. Step 5: Solve for x
   x = 151,008,017,006.25/250,578
6. Step 6: Final answer
   x = 602,638.77