Finding the Third Proportional to 42,556 and 91,520

Step by Step Solution

1. Step 1: Write the proportion equation
   42,556 : 91,520 = 91,520 : x
2. Step 2: Convert to fraction form
   42,556/91,520 = 91,520/x
3. Step 3: Cross multiply
   42,556x = 91,520 × 91,520
4. Step 4: Simplify right side
   42,556x = 8,375,910,400
5. Step 5: Solve for x
   x = 8,375,910,400/42,556
6. Step 6: Final answer
   x = 196,820.90