Finding the Third Proportional to 67,880 and 89,262

Step by Step Solution

1. Step 1: Write the proportion equation
   67,880 : 89,262 = 89,262 : x
2. Step 2: Convert to fraction form
   67,880/89,262 = 89,262/x
3. Step 3: Cross multiply
   67,880x = 89,262 × 89,262
4. Step 4: Simplify right side
   67,880x = 7,967,704,644
5. Step 5: Solve for x
   x = 7,967,704,644/67,880
6. Step 6: Final answer
   x = 117,379.27