Finding the Third Proportional to 4,262,516 and 9,131,512

Step by Step Solution

1. Step 1: Write the proportion equation
   4,262,516 : 9,131,512 = 9,131,512 : x
2. Step 2: Convert to fraction form
   4,262,516/9,131,512 = 9,131,512/x
3. Step 3: Cross multiply
   4,262,516x = 9,131,512 × 9,131,512
4. Step 4: Simplify right side
   4,262,516x = 83,384,511,406,144
5. Step 5: Solve for x
   x = 83,384,511,406,144/4,262,516
6. Step 6: Final answer
   x = 19,562,275.29