Finding the Third Proportional to 70,839 and 147,456

Step by Step Solution

1. Step 1: Write the proportion equation
   70,839 : 147,456 = 147,456 : x
2. Step 2: Convert to fraction form
   70,839/147,456 = 147,456/x
3. Step 3: Cross multiply
   70,839x = 147,456 × 147,456
4. Step 4: Simplify right side
   70,839x = 21,743,271,936
5. Step 5: Solve for x
   x = 21,743,271,936/70,839
6. Step 6: Final answer
   x = 306,939.28