Finding the Third Proportional to 250,370 and 381,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,370 : 381,860.50 = 381,860.50 : x
2. Step 2: Convert to fraction form
   250,370/381,860.50 = 381,860.50/x
3. Step 3: Cross multiply
   250,370x = 381,860.50 × 381,860.50
4. Step 4: Simplify right side
   250,370x = 145,817,441,460.25
5. Step 5: Solve for x
   x = 145,817,441,460.25/250,370
6. Step 6: Final answer
   x = 582,407.80