Finding the Third Proportional to 80,485,442 and 174,581,666

Step by Step Solution

1. Step 1: Write the proportion equation
   80,485,442 : 174,581,666 = 174,581,666 : x
2. Step 2: Convert to fraction form
   80,485,442/174,581,666 = 174,581,666/x
3. Step 3: Cross multiply
   80,485,442x = 174,581,666 × 174,581,666
4. Step 4: Simplify right side
   80,485,442x = 30,478,758,103,335,556
5. Step 5: Solve for x
   x = 30,478,758,103,335,556/80,485,442
6. Step 6: Final answer
   x = 378,686,596.56