Finding the Third Proportional to 1,288,422 and 2,910,906

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,422 : 2,910,906 = 2,910,906 : x
2. Step 2: Convert to fraction form
   1,288,422/2,910,906 = 2,910,906/x
3. Step 3: Cross multiply
   1,288,422x = 2,910,906 × 2,910,906
4. Step 4: Simplify right side
   1,288,422x = 8,473,373,740,836
5. Step 5: Solve for x
   x = 8,473,373,740,836/1,288,422
6. Step 6: Final answer
   x = 6,576,551.58