Finding the Third Proportional to 3,666,455 and 5,387,309

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666,455 : 5,387,309 = 5,387,309 : x
2. Step 2: Convert to fraction form
   3,666,455/5,387,309 = 5,387,309/x
3. Step 3: Cross multiply
   3,666,455x = 5,387,309 × 5,387,309
4. Step 4: Simplify right side
   3,666,455x = 29,023,098,261,481
5. Step 5: Solve for x
   x = 29,023,098,261,481/3,666,455
6. Step 6: Final answer
   x = 7,915,847.40