Finding the Third Proportional to 250,719 and 388,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,719 : 388,387.50 = 388,387.50 : x
2. Step 2: Convert to fraction form
   250,719/388,387.50 = 388,387.50/x
3. Step 3: Cross multiply
   250,719x = 388,387.50 × 388,387.50
4. Step 4: Simplify right side
   250,719x = 150,844,850,156.25
5. Step 5: Solve for x
   x = 150,844,850,156.25/250,719
6. Step 6: Final answer
   x = 601,649.06