Finding the Third Proportional to 1,915,422 and 2,856,521

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915,422 : 2,856,521 = 2,856,521 : x
2. Step 2: Convert to fraction form
   1,915,422/2,856,521 = 2,856,521/x
3. Step 3: Cross multiply
   1,915,422x = 2,856,521 × 2,856,521
4. Step 4: Simplify right side
   1,915,422x = 8,159,712,223,441
5. Step 5: Solve for x
   x = 8,159,712,223,441/1,915,422
6. Step 6: Final answer
   x = 4,260,007.57