Finding the Third Proportional to 388,984 and 859,616

Step by Step Solution

1. Step 1: Write the proportion equation
   388,984 : 859,616 = 859,616 : x
2. Step 2: Convert to fraction form
   388,984/859,616 = 859,616/x
3. Step 3: Cross multiply
   388,984x = 859,616 × 859,616
4. Step 4: Simplify right side
   388,984x = 738,939,667,456
5. Step 5: Solve for x
   x = 738,939,667,456/388,984
6. Step 6: Final answer
   x = 1,899,665.97