Finding the Third Proportional to 2,115,490 and 4,567,628

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115,490 : 4,567,628 = 4,567,628 : x
2. Step 2: Convert to fraction form
   2,115,490/4,567,628 = 4,567,628/x
3. Step 3: Cross multiply
   2,115,490x = 4,567,628 × 4,567,628
4. Step 4: Simplify right side
   2,115,490x = 20,863,225,546,384
5. Step 5: Solve for x
   x = 20,863,225,546,384/2,115,490
6. Step 6: Final answer
   x = 9,862,124.40