Finding the Third Proportional to 4,550,591 and 9,776,558

Step by Step Solution

1. Step 1: Write the proportion equation
   4,550,591 : 9,776,558 = 9,776,558 : x
2. Step 2: Convert to fraction form
   4,550,591/9,776,558 = 9,776,558/x
3. Step 3: Cross multiply
   4,550,591x = 9,776,558 × 9,776,558
4. Step 4: Simplify right side
   4,550,591x = 95,581,086,327,364
5. Step 5: Solve for x
   x = 95,581,086,327,364/4,550,591
6. Step 6: Final answer
   x = 21,004,103.93