Finding the Third Proportional to 71,080 and 140,154

Step by Step Solution

1. Step 1: Write the proportion equation
   71,080 : 140,154 = 140,154 : x
2. Step 2: Convert to fraction form
   71,080/140,154 = 140,154/x
3. Step 3: Cross multiply
   71,080x = 140,154 × 140,154
4. Step 4: Simplify right side
   71,080x = 19,643,143,716
5. Step 5: Solve for x
   x = 19,643,143,716/71,080
6. Step 6: Final answer
   x = 276,352.61