Finding the Third Proportional to 140,832 and 300,168

Step by Step Solution

1. Step 1: Write the proportion equation
   140,832 : 300,168 = 300,168 : x
2. Step 2: Convert to fraction form
   140,832/300,168 = 300,168/x
3. Step 3: Cross multiply
   140,832x = 300,168 × 300,168
4. Step 4: Simplify right side
   140,832x = 90,100,828,224
5. Step 5: Solve for x
   x = 90,100,828,224/140,832
6. Step 6: Final answer
   x = 639,775.25