Finding the Third Proportional to 1,722,408 and 2,688,252

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722,408 : 2,688,252 = 2,688,252 : x
2. Step 2: Convert to fraction form
   1,722,408/2,688,252 = 2,688,252/x
3. Step 3: Cross multiply
   1,722,408x = 2,688,252 × 2,688,252
4. Step 4: Simplify right side
   1,722,408x = 7,226,698,815,504
5. Step 5: Solve for x
   x = 7,226,698,815,504/1,722,408
6. Step 6: Final answer
   x = 4,195,695.11