Finding the Third Proportional to 50,872 and 77,172

Step by Step Solution

1. Step 1: Write the proportion equation
   50,872 : 77,172 = 77,172 : x
2. Step 2: Convert to fraction form
   50,872/77,172 = 77,172/x
3. Step 3: Cross multiply
   50,872x = 77,172 × 77,172
4. Step 4: Simplify right side
   50,872x = 5,955,517,584
5. Step 5: Solve for x
   x = 5,955,517,584/50,872
6. Step 6: Final answer
   x = 117,068.67