Finding the Third Proportional to 587,940 and 1,287,918

Step by Step Solution

1. Step 1: Write the proportion equation
   587,940 : 1,287,918 = 1,287,918 : x
2. Step 2: Convert to fraction form
   587,940/1,287,918 = 1,287,918/x
3. Step 3: Cross multiply
   587,940x = 1,287,918 × 1,287,918
4. Step 4: Simplify right side
   587,940x = 1,658,732,774,724
5. Step 5: Solve for x
   x = 1,658,732,774,724/587,940
6. Step 6: Final answer
   x = 2,821,261.99