Finding the Third Proportional to 1,171,991 and 2,487,868

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171,991 : 2,487,868 = 2,487,868 : x
2. Step 2: Convert to fraction form
   1,171,991/2,487,868 = 2,487,868/x
3. Step 3: Cross multiply
   1,171,991x = 2,487,868 × 2,487,868
4. Step 4: Simplify right side
   1,171,991x = 6,189,487,185,424
5. Step 5: Solve for x
   x = 6,189,487,185,424/1,171,991
6. Step 6: Final answer
   x = 5,281,172.97