Finding the Third Proportional to 70,518 and 109,242

Step by Step Solution

1. Step 1: Write the proportion equation
   70,518 : 109,242 = 109,242 : x
2. Step 2: Convert to fraction form
   70,518/109,242 = 109,242/x
3. Step 3: Cross multiply
   70,518x = 109,242 × 109,242
4. Step 4: Simplify right side
   70,518x = 11,933,814,564
5. Step 5: Solve for x
   x = 11,933,814,564/70,518
6. Step 6: Final answer
   x = 169,230.76