Finding the Third Proportional to 899,388 and 1,915,299

Step by Step Solution

1. Step 1: Write the proportion equation
   899,388 : 1,915,299 = 1,915,299 : x
2. Step 2: Convert to fraction form
   899,388/1,915,299 = 1,915,299/x
3. Step 3: Cross multiply
   899,388x = 1,915,299 × 1,915,299
4. Step 4: Simplify right side
   899,388x = 3,668,370,259,401
5. Step 5: Solve for x
   x = 3,668,370,259,401/899,388
6. Step 6: Final answer
   x = 4,078,740.50