Finding the Third Proportional to 1,728,426 and 2,705,215

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728,426 : 2,705,215 = 2,705,215 : x
2. Step 2: Convert to fraction form
   1,728,426/2,705,215 = 2,705,215/x
3. Step 3: Cross multiply
   1,728,426x = 2,705,215 × 2,705,215
4. Step 4: Simplify right side
   1,728,426x = 7,318,188,196,225
5. Step 5: Solve for x
   x = 7,318,188,196,225/1,728,426
6. Step 6: Final answer
   x = 4,234,018.81