Finding the Third Proportional to 4,200,923 and 8,555,938

Step by Step Solution

1. Step 1: Write the proportion equation
   4,200,923 : 8,555,938 = 8,555,938 : x
2. Step 2: Convert to fraction form
   4,200,923/8,555,938 = 8,555,938/x
3. Step 3: Cross multiply
   4,200,923x = 8,555,938 × 8,555,938
4. Step 4: Simplify right side
   4,200,923x = 73,204,075,059,844
5. Step 5: Solve for x
   x = 73,204,075,059,844/4,200,923
6. Step 6: Final answer
   x = 17,425,712.17