Finding the Third Proportional to 67,726 and 145,172

Step by Step Solution

1. Step 1: Write the proportion equation
   67,726 : 145,172 = 145,172 : x
2. Step 2: Convert to fraction form
   67,726/145,172 = 145,172/x
3. Step 3: Cross multiply
   67,726x = 145,172 × 145,172
4. Step 4: Simplify right side
   67,726x = 21,074,909,584
5. Step 5: Solve for x
   x = 21,074,909,584/67,726
6. Step 6: Final answer
   x = 311,179.01