Finding the Third Proportional to 1,915,417 and 2,856,516

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915,417 : 2,856,516 = 2,856,516 : x
2. Step 2: Convert to fraction form
   1,915,417/2,856,516 = 2,856,516/x
3. Step 3: Cross multiply
   1,915,417x = 2,856,516 × 2,856,516
4. Step 4: Simplify right side
   1,915,417x = 8,159,683,658,256
5. Step 5: Solve for x
   x = 8,159,683,658,256/1,915,417
6. Step 6: Final answer
   x = 4,260,003.78