Finding the Third Proportional to 1,388,551 and 2,100,242

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,551 : 2,100,242 = 2,100,242 : x
2. Step 2: Convert to fraction form
   1,388,551/2,100,242 = 2,100,242/x
3. Step 3: Cross multiply
   1,388,551x = 2,100,242 × 2,100,242
4. Step 4: Simplify right side
   1,388,551x = 4,411,016,458,564
5. Step 5: Solve for x
   x = 4,411,016,458,564/1,388,551
6. Step 6: Final answer
   x = 3,176,704.68