Finding the Third Proportional to 1,485,338 and 2,165,415

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485,338 : 2,165,415 = 2,165,415 : x
2. Step 2: Convert to fraction form
   1,485,338/2,165,415 = 2,165,415/x
3. Step 3: Cross multiply
   1,485,338x = 2,165,415 × 2,165,415
4. Step 4: Simplify right side
   1,485,338x = 4,689,022,122,225
5. Step 5: Solve for x
   x = 4,689,022,122,225/1,485,338
6. Step 6: Final answer
   x = 3,156,872.12