Finding the Third Proportional to 1,286,358 and 1,890,999

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,358 : 1,890,999 = 1,890,999 : x
2. Step 2: Convert to fraction form
   1,286,358/1,890,999 = 1,890,999/x
3. Step 3: Cross multiply
   1,286,358x = 1,890,999 × 1,890,999
4. Step 4: Simplify right side
   1,286,358x = 3,575,877,218,001
5. Step 5: Solve for x
   x = 3,575,877,218,001/1,286,358
6. Step 6: Final answer
   x = 2,779,846.06