Finding the Third Proportional to 107,992 and 220,300

Step by Step Solution

1. Step 1: Write the proportion equation
   107,992 : 220,300 = 220,300 : x
2. Step 2: Convert to fraction form
   107,992/220,300 = 220,300/x
3. Step 3: Cross multiply
   107,992x = 220,300 × 220,300
4. Step 4: Simplify right side
   107,992x = 48,532,090,000
5. Step 5: Solve for x
   x = 48,532,090,000/107,992
6. Step 6: Final answer
   x = 449,404.49