Finding the Third Proportional to 284,286 and 612,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,286 : 612,856.50 = 612,856.50 : x
2. Step 2: Convert to fraction form
   284,286/612,856.50 = 612,856.50/x
3. Step 3: Cross multiply
   284,286x = 612,856.50 × 612,856.50
4. Step 4: Simplify right side
   284,286x = 375,593,089,592.25
5. Step 5: Solve for x
   x = 375,593,089,592.25/284,286
6. Step 6: Final answer
   x = 1,321,180.39