Finding the Third Proportional to 171,808 and 262,155

Step by Step Solution

1. Step 1: Write the proportion equation
   171,808 : 262,155 = 262,155 : x
2. Step 2: Convert to fraction form
   171,808/262,155 = 262,155/x
3. Step 3: Cross multiply
   171,808x = 262,155 × 262,155
4. Step 4: Simplify right side
   171,808x = 68,725,244,025
5. Step 5: Solve for x
   x = 68,725,244,025/171,808
6. Step 6: Final answer
   x = 400,011.90