Finding the Third Proportional to 1,860,416 and 2,790,624

Step by Step Solution

1. Step 1: Write the proportion equation
   1,860,416 : 2,790,624 = 2,790,624 : x
2. Step 2: Convert to fraction form
   1,860,416/2,790,624 = 2,790,624/x
3. Step 3: Cross multiply
   1,860,416x = 2,790,624 × 2,790,624
4. Step 4: Simplify right side
   1,860,416x = 7,787,582,309,376
5. Step 5: Solve for x
   x = 7,787,582,309,376/1,860,416
6. Step 6: Final answer
   x = 4,185,936