Finding the Third Proportional to 1,388,256 and 2,815,152

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,256 : 2,815,152 = 2,815,152 : x
2. Step 2: Convert to fraction form
   1,388,256/2,815,152 = 2,815,152/x
3. Step 3: Cross multiply
   1,388,256x = 2,815,152 × 2,815,152
4. Step 4: Simplify right side
   1,388,256x = 7,925,080,783,104
5. Step 5: Solve for x
   x = 7,925,080,783,104/1,388,256
6. Step 6: Final answer
   x = 5,708,659.49