Finding the Third Proportional to 1,418,319 and 2,128,929

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418,319 : 2,128,929 = 2,128,929 : x
2. Step 2: Convert to fraction form
   1,418,319/2,128,929 = 2,128,929/x
3. Step 3: Cross multiply
   1,418,319x = 2,128,929 × 2,128,929
4. Step 4: Simplify right side
   1,418,319x = 4,532,338,687,041
5. Step 5: Solve for x
   x = 4,532,338,687,041/1,418,319
6. Step 6: Final answer
   x = 3,195,570.73