Finding the Third Proportional to 67,061 and 139,630

Step by Step Solution

1. Step 1: Write the proportion equation
   67,061 : 139,630 = 139,630 : x
2. Step 2: Convert to fraction form
   67,061/139,630 = 139,630/x
3. Step 3: Cross multiply
   67,061x = 139,630 × 139,630
4. Step 4: Simplify right side
   67,061x = 19,496,536,900
5. Step 5: Solve for x
   x = 19,496,536,900/67,061
6. Step 6: Final answer
   x = 290,728.40