Finding the Third Proportional to 144,448 and 322,090

Step by Step Solution

1. Step 1: Write the proportion equation
   144,448 : 322,090 = 322,090 : x
2. Step 2: Convert to fraction form
   144,448/322,090 = 322,090/x
3. Step 3: Cross multiply
   144,448x = 322,090 × 322,090
4. Step 4: Simplify right side
   144,448x = 103,741,968,100
5. Step 5: Solve for x
   x = 103,741,968,100/144,448
6. Step 6: Final answer
   x = 718,195.95