Finding the Third Proportional to 92,872 and 140,172

Step by Step Solution

1. Step 1: Write the proportion equation
   92,872 : 140,172 = 140,172 : x
2. Step 2: Convert to fraction form
   92,872/140,172 = 140,172/x
3. Step 3: Cross multiply
   92,872x = 140,172 × 140,172
4. Step 4: Simplify right side
   92,872x = 19,648,189,584
5. Step 5: Solve for x
   x = 19,648,189,584/92,872
6. Step 6: Final answer
   x = 211,562.04