Finding the Third Proportional to 70,216 and 105,215

Step by Step Solution

1. Step 1: Write the proportion equation
   70,216 : 105,215 = 105,215 : x
2. Step 2: Convert to fraction form
   70,216/105,215 = 105,215/x
3. Step 3: Cross multiply
   70,216x = 105,215 × 105,215
4. Step 4: Simplify right side
   70,216x = 11,070,196,225
5. Step 5: Solve for x
   x = 11,070,196,225/70,216
6. Step 6: Final answer
   x = 157,659.17