Finding the Third Proportional to 1,555,242 and 2,223,999

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555,242 : 2,223,999 = 2,223,999 : x
2. Step 2: Convert to fraction form
   1,555,242/2,223,999 = 2,223,999/x
3. Step 3: Cross multiply
   1,555,242x = 2,223,999 × 2,223,999
4. Step 4: Simplify right side
   1,555,242x = 4,946,171,552,001
5. Step 5: Solve for x
   x = 4,946,171,552,001/1,555,242
6. Step 6: Final answer
   x = 3,180,322.77