Finding the Third Proportional to 1,286,352 and 1,890,990

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,352 : 1,890,990 = 1,890,990 : x
2. Step 2: Convert to fraction form
   1,286,352/1,890,990 = 1,890,990/x
3. Step 3: Cross multiply
   1,286,352x = 1,890,990 × 1,890,990
4. Step 4: Simplify right side
   1,286,352x = 3,575,843,180,100
5. Step 5: Solve for x
   x = 3,575,843,180,100/1,286,352
6. Step 6: Final answer
   x = 2,779,832.57