Finding the Third Proportional to 2,027,840 and 4,429,628

Step by Step Solution

1. Step 1: Write the proportion equation
   2,027,840 : 4,429,628 = 4,429,628 : x
2. Step 2: Convert to fraction form
   2,027,840/4,429,628 = 4,429,628/x
3. Step 3: Cross multiply
   2,027,840x = 4,429,628 × 4,429,628
4. Step 4: Simplify right side
   2,027,840x = 19,621,604,218,384
5. Step 5: Solve for x
   x = 19,621,604,218,384/2,027,840
6. Step 6: Final answer
   x = 9,676,110.65