Finding the Third Proportional to 911,777 and 1,978,102

Step by Step Solution

1. Step 1: Write the proportion equation
   911,777 : 1,978,102 = 1,978,102 : x
2. Step 2: Convert to fraction form
   911,777/1,978,102 = 1,978,102/x
3. Step 3: Cross multiply
   911,777x = 1,978,102 × 1,978,102
4. Step 4: Simplify right side
   911,777x = 3,912,887,522,404
5. Step 5: Solve for x
   x = 3,912,887,522,404/911,777
6. Step 6: Final answer
   x = 4,291,496.19