Finding the Third Proportional to 284,287 and 612,858.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,287 : 612,858.50 = 612,858.50 : x
2. Step 2: Convert to fraction form
   284,287/612,858.50 = 612,858.50/x
3. Step 3: Cross multiply
   284,287x = 612,858.50 × 612,858.50
4. Step 4: Simplify right side
   284,287x = 375,595,541,022.25
5. Step 5: Solve for x
   x = 375,595,541,022.25/284,287
6. Step 6: Final answer
   x = 1,321,184.37