Finding the Third Proportional to 68,162 and 139,630

Step by Step Solution

1. Step 1: Write the proportion equation
   68,162 : 139,630 = 139,630 : x
2. Step 2: Convert to fraction form
   68,162/139,630 = 139,630/x
3. Step 3: Cross multiply
   68,162x = 139,630 × 139,630
4. Step 4: Simplify right side
   68,162x = 19,496,536,900
5. Step 5: Solve for x
   x = 19,496,536,900/68,162
6. Step 6: Final answer
   x = 286,032.35