Finding the Third Proportional to 3,666,418 and 5,387,256

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666,418 : 5,387,256 = 5,387,256 : x
2. Step 2: Convert to fraction form
   3,666,418/5,387,256 = 5,387,256/x
3. Step 3: Cross multiply
   3,666,418x = 5,387,256 × 5,387,256
4. Step 4: Simplify right side
   3,666,418x = 29,022,527,209,536
5. Step 5: Solve for x
   x = 29,022,527,209,536/3,666,418
6. Step 6: Final answer
   x = 7,915,771.53