Finding the Third Proportional to 3,121,858 and 6,329,838

Step by Step Solution

1. Step 1: Write the proportion equation
   3,121,858 : 6,329,838 = 6,329,838 : x
2. Step 2: Convert to fraction form
   3,121,858/6,329,838 = 6,329,838/x
3. Step 3: Cross multiply
   3,121,858x = 6,329,838 × 6,329,838
4. Step 4: Simplify right side
   3,121,858x = 40,066,849,106,244
5. Step 5: Solve for x
   x = 40,066,849,106,244/3,121,858
6. Step 6: Final answer
   x = 12,834,295.83