Finding the Third Proportional to 1,418,272 and 2,128,860

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418,272 : 2,128,860 = 2,128,860 : x
2. Step 2: Convert to fraction form
   1,418,272/2,128,860 = 2,128,860/x
3. Step 3: Cross multiply
   1,418,272x = 2,128,860 × 2,128,860
4. Step 4: Simplify right side
   1,418,272x = 4,532,044,899,600
5. Step 5: Solve for x
   x = 4,532,044,899,600/1,418,272
6. Step 6: Final answer
   x = 3,195,469.49