Finding the Third Proportional to 145,248 and 314,622

Step by Step Solution

1. Step 1: Write the proportion equation
   145,248 : 314,622 = 314,622 : x
2. Step 2: Convert to fraction form
   145,248/314,622 = 314,622/x
3. Step 3: Cross multiply
   145,248x = 314,622 × 314,622
4. Step 4: Simplify right side
   145,248x = 98,987,002,884
5. Step 5: Solve for x
   x = 98,987,002,884/145,248
6. Step 6: Final answer
   x = 681,503.38