Finding the Third Proportional to 587,972 and 1,287,989

Step by Step Solution

1. Step 1: Write the proportion equation
   587,972 : 1,287,989 = 1,287,989 : x
2. Step 2: Convert to fraction form
   587,972/1,287,989 = 1,287,989/x
3. Step 3: Cross multiply
   587,972x = 1,287,989 × 1,287,989
4. Step 4: Simplify right side
   587,972x = 1,658,915,664,121
5. Step 5: Solve for x
   x = 1,658,915,664,121/587,972
6. Step 6: Final answer
   x = 2,821,419.50