Finding the Third Proportional to 67,724 and 103,172

Step by Step Solution

1. Step 1: Write the proportion equation
   67,724 : 103,172 = 103,172 : x
2. Step 2: Convert to fraction form
   67,724/103,172 = 103,172/x
3. Step 3: Cross multiply
   67,724x = 103,172 × 103,172
4. Step 4: Simplify right side
   67,724x = 10,644,461,584
5. Step 5: Solve for x
   x = 10,644,461,584/67,724
6. Step 6: Final answer
   x = 157,174.14