Finding the Third Proportional to 86,290 and 176,760

Step by Step Solution

1. Step 1: Write the proportion equation
   86,290 : 176,760 = 176,760 : x
2. Step 2: Convert to fraction form
   86,290/176,760 = 176,760/x
3. Step 3: Cross multiply
   86,290x = 176,760 × 176,760
4. Step 4: Simplify right side
   86,290x = 31,244,097,600
5. Step 5: Solve for x
   x = 31,244,097,600/86,290
6. Step 6: Final answer
   x = 362,082.48