Finding the Third Proportional to 3,571,385 and 5,389,280

Step by Step Solution

1. Step 1: Write the proportion equation
   3,571,385 : 5,389,280 = 5,389,280 : x
2. Step 2: Convert to fraction form
   3,571,385/5,389,280 = 5,389,280/x
3. Step 3: Cross multiply
   3,571,385x = 5,389,280 × 5,389,280
4. Step 4: Simplify right side
   3,571,385x = 29,044,338,918,400
5. Step 5: Solve for x
   x = 29,044,338,918,400/3,571,385
6. Step 6: Final answer
   x = 8,132,514.11