Finding the Third Proportional to 1,212,512 and 1,811,280

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,512 : 1,811,280 = 1,811,280 : x
2. Step 2: Convert to fraction form
   1,212,512/1,811,280 = 1,811,280/x
3. Step 3: Cross multiply
   1,212,512x = 1,811,280 × 1,811,280
4. Step 4: Simplify right side
   1,212,512x = 3,280,735,238,400
5. Step 5: Solve for x
   x = 3,280,735,238,400/1,212,512
6. Step 6: Final answer
   x = 2,705,734.24