Finding the Third Proportional to 2,149,708 and 4,686,488

Step by Step Solution

1. Step 1: Write the proportion equation
   2,149,708 : 4,686,488 = 4,686,488 : x
2. Step 2: Convert to fraction form
   2,149,708/4,686,488 = 4,686,488/x
3. Step 3: Cross multiply
   2,149,708x = 4,686,488 × 4,686,488
4. Step 4: Simplify right side
   2,149,708x = 21,963,169,774,144
5. Step 5: Solve for x
   x = 21,963,169,774,144/2,149,708
6. Step 6: Final answer
   x = 10,216,815.39