Finding the Third Proportional to 1,285,454 and 1,888,407

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285,454 : 1,888,407 = 1,888,407 : x
2. Step 2: Convert to fraction form
   1,285,454/1,888,407 = 1,888,407/x
3. Step 3: Cross multiply
   1,285,454x = 1,888,407 × 1,888,407
4. Step 4: Simplify right side
   1,285,454x = 3,566,080,997,649
5. Step 5: Solve for x
   x = 3,566,080,997,649/1,285,454
6. Step 6: Final answer
   x = 2,774,180.17