Finding the Third Proportional to 3,666,418 and 5,387,255

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666,418 : 5,387,255 = 5,387,255 : x
2. Step 2: Convert to fraction form
   3,666,418/5,387,255 = 5,387,255/x
3. Step 3: Cross multiply
   3,666,418x = 5,387,255 × 5,387,255
4. Step 4: Simplify right side
   3,666,418x = 29,022,516,435,025
5. Step 5: Solve for x
   x = 29,022,516,435,025/3,666,418
6. Step 6: Final answer
   x = 7,915,768.59