Finding the Third Proportional to 68,064 and 144,210

Step by Step Solution

1. Step 1: Write the proportion equation
   68,064 : 144,210 = 144,210 : x
2. Step 2: Convert to fraction form
   68,064/144,210 = 144,210/x
3. Step 3: Cross multiply
   68,064x = 144,210 × 144,210
4. Step 4: Simplify right side
   68,064x = 20,796,524,100
5. Step 5: Solve for x
   x = 20,796,524,100/68,064
6. Step 6: Final answer
   x = 305,543.67