Finding the Third Proportional to 131,476 and 213,608

Step by Step Solution

1. Step 1: Write the proportion equation
   131,476 : 213,608 = 213,608 : x
2. Step 2: Convert to fraction form
   131,476/213,608 = 213,608/x
3. Step 3: Cross multiply
   131,476x = 213,608 × 213,608
4. Step 4: Simplify right side
   131,476x = 45,628,377,664
5. Step 5: Solve for x
   x = 45,628,377,664/131,476
6. Step 6: Final answer
   x = 347,047.20