Finding the Third Proportional to 67,280 and 143,196

Step by Step Solution

1. Step 1: Write the proportion equation
   67,280 : 143,196 = 143,196 : x
2. Step 2: Convert to fraction form
   67,280/143,196 = 143,196/x
3. Step 3: Cross multiply
   67,280x = 143,196 × 143,196
4. Step 4: Simplify right side
   67,280x = 20,505,094,416
5. Step 5: Solve for x
   x = 20,505,094,416/67,280
6. Step 6: Final answer
   x = 304,772.51