Finding the Third Proportional to 899,416 and 1,915,356

Step by Step Solution

1. Step 1: Write the proportion equation
   899,416 : 1,915,356 = 1,915,356 : x
2. Step 2: Convert to fraction form
   899,416/1,915,356 = 1,915,356/x
3. Step 3: Cross multiply
   899,416x = 1,915,356 × 1,915,356
4. Step 4: Simplify right side
   899,416x = 3,668,588,606,736
5. Step 5: Solve for x
   x = 3,668,588,606,736/899,416
6. Step 6: Final answer
   x = 4,078,856.29