Finding the Third Proportional to 30,272 and 62,990

Step by Step Solution

1. Step 1: Write the proportion equation
   30,272 : 62,990 = 62,990 : x
2. Step 2: Convert to fraction form
   30,272/62,990 = 62,990/x
3. Step 3: Cross multiply
   30,272x = 62,990 × 62,990
4. Step 4: Simplify right side
   30,272x = 3,967,740,100
5. Step 5: Solve for x
   x = 3,967,740,100/30,272
6. Step 6: Final answer
   x = 131,069.64