Finding the Third Proportional to 1,448,390 and 2,191,223

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448,390 : 2,191,223 = 2,191,223 : x
2. Step 2: Convert to fraction form
   1,448,390/2,191,223 = 2,191,223/x
3. Step 3: Cross multiply
   1,448,390x = 2,191,223 × 2,191,223
4. Step 4: Simplify right side
   1,448,390x = 4,801,458,235,729
5. Step 5: Solve for x
   x = 4,801,458,235,729/1,448,390
6. Step 6: Final answer
   x = 3,315,031.34