Finding the Third Proportional to 1,215,252 and 2,659,328

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,252 : 2,659,328 = 2,659,328 : x
2. Step 2: Convert to fraction form
   1,215,252/2,659,328 = 2,659,328/x
3. Step 3: Cross multiply
   1,215,252x = 2,659,328 × 2,659,328
4. Step 4: Simplify right side
   1,215,252x = 7,072,025,411,584
5. Step 5: Solve for x
   x = 7,072,025,411,584/1,215,252
6. Step 6: Final answer
   x = 5,819,390.06