Finding the Third Proportional to 911,772 and 1,978,092

Step by Step Solution

1. Step 1: Write the proportion equation
   911,772 : 1,978,092 = 1,978,092 : x
2. Step 2: Convert to fraction form
   911,772/1,978,092 = 1,978,092/x
3. Step 3: Cross multiply
   911,772x = 1,978,092 × 1,978,092
4. Step 4: Simplify right side
   911,772x = 3,912,847,960,464
5. Step 5: Solve for x
   x = 3,912,847,960,464/911,772
6. Step 6: Final answer
   x = 4,291,476.33