Finding the Third Proportional to 12,439,994 and 25,873,128

Step by Step Solution

1. Step 1: Write the proportion equation
   12,439,994 : 25,873,128 = 25,873,128 : x
2. Step 2: Convert to fraction form
   12,439,994/25,873,128 = 25,873,128/x
3. Step 3: Cross multiply
   12,439,994x = 25,873,128 × 25,873,128
4. Step 4: Simplify right side
   12,439,994x = 669,418,752,504,384
5. Step 5: Solve for x
   x = 669,418,752,504,384/12,439,994
6. Step 6: Final answer
   x = 53,811,822.78