Finding the Third Proportional to 2,129,840 and 4,632,856

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,840 : 4,632,856 = 4,632,856 : x
2. Step 2: Convert to fraction form
   2,129,840/4,632,856 = 4,632,856/x
3. Step 3: Cross multiply
   2,129,840x = 4,632,856 × 4,632,856
4. Step 4: Simplify right side
   2,129,840x = 21,463,354,716,736
5. Step 5: Solve for x
   x = 21,463,354,716,736/2,129,840
6. Step 6: Final answer
   x = 10,077,449.35