Finding the Third Proportional to 70,708 and 148,216

Step by Step Solution

1. Step 1: Write the proportion equation
   70,708 : 148,216 = 148,216 : x
2. Step 2: Convert to fraction form
   70,708/148,216 = 148,216/x
3. Step 3: Cross multiply
   70,708x = 148,216 × 148,216
4. Step 4: Simplify right side
   70,708x = 21,967,982,656
5. Step 5: Solve for x
   x = 21,967,982,656/70,708
6. Step 6: Final answer
   x = 310,685.96