Finding the Third Proportional to 67,056 and 139,620

Step by Step Solution

1. Step 1: Write the proportion equation
   67,056 : 139,620 = 139,620 : x
2. Step 2: Convert to fraction form
   67,056/139,620 = 139,620/x
3. Step 3: Cross multiply
   67,056x = 139,620 × 139,620
4. Step 4: Simplify right side
   67,056x = 19,493,744,400
5. Step 5: Solve for x
   x = 19,493,744,400/67,056
6. Step 6: Final answer
   x = 290,708.43