Finding the Third Proportional to 999,612 and 1,587,978

Step by Step Solution

1. Step 1: Write the proportion equation
   999,612 : 1,587,978 = 1,587,978 : x
2. Step 2: Convert to fraction form
   999,612/1,587,978 = 1,587,978/x
3. Step 3: Cross multiply
   999,612x = 1,587,978 × 1,587,978
4. Step 4: Simplify right side
   999,612x = 2,521,674,128,484
5. Step 5: Solve for x
   x = 2,521,674,128,484/999,612
6. Step 6: Final answer
   x = 2,522,652.92