Finding the Third Proportional to 8,378,256 and 12,893,984

Step by Step Solution

1. Step 1: Write the proportion equation
   8,378,256 : 12,893,984 = 12,893,984 : x
2. Step 2: Convert to fraction form
   8,378,256/12,893,984 = 12,893,984/x
3. Step 3: Cross multiply
   8,378,256x = 12,893,984 × 12,893,984
4. Step 4: Simplify right side
   8,378,256x = 166,254,823,392,256
5. Step 5: Solve for x
   x = 166,254,823,392,256/8,378,256
6. Step 6: Final answer
   x = 19,843,607.48