Finding the Third Proportional to 61,808 and 70,556

Step by Step Solution

1. Step 1: Write the proportion equation
   61,808 : 70,556 = 70,556 : x
2. Step 2: Convert to fraction form
   61,808/70,556 = 70,556/x
3. Step 3: Cross multiply
   61,808x = 70,556 × 70,556
4. Step 4: Simplify right side
   61,808x = 4,978,149,136
5. Step 5: Solve for x
   x = 4,978,149,136/61,808
6. Step 6: Final answer
   x = 80,542.15