Finding the Third Proportional to 67,980 and 99,969

Step by Step Solution

1. Step 1: Write the proportion equation
   67,980 : 99,969 = 99,969 : x
2. Step 2: Convert to fraction form
   67,980/99,969 = 99,969/x
3. Step 3: Cross multiply
   67,980x = 99,969 × 99,969
4. Step 4: Simplify right side
   67,980x = 9,993,800,961
5. Step 5: Solve for x
   x = 9,993,800,961/67,980
6. Step 6: Final answer
   x = 147,010.90