Finding the Third Proportional to 144,362.25 and 314,928

Step by Step Solution

1. Step 1: Write the proportion equation
   144,362.25 : 314,928 = 314,928 : x
2. Step 2: Convert to fraction form
   144,362.25/314,928 = 314,928/x
3. Step 3: Cross multiply
   144,362.25x = 314,928 × 314,928
4. Step 4: Simplify right side
   144,362.25x = 99,179,645,184
5. Step 5: Solve for x
   x = 99,179,645,184/144,362.25
6. Step 6: Final answer
   x = 687,019.25