Finding the Third Proportional to 1,647,888 and 2,207,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647,888 : 2,207,128 = 2,207,128 : x
2. Step 2: Convert to fraction form
   1,647,888/2,207,128 = 2,207,128/x
3. Step 3: Cross multiply
   1,647,888x = 2,207,128 × 2,207,128
4. Step 4: Simplify right side
   1,647,888x = 4,871,414,008,384
5. Step 5: Solve for x
   x = 4,871,414,008,384/1,647,888
6. Step 6: Final answer
   x = 2,956,156.01