Finding the Third Proportional to 162,709.50 and 353,406

Step by Step Solution

1. Step 1: Write the proportion equation
   162,709.50 : 353,406 = 353,406 : x
2. Step 2: Convert to fraction form
   162,709.50/353,406 = 353,406/x
3. Step 3: Cross multiply
   162,709.50x = 353,406 × 353,406
4. Step 4: Simplify right side
   162,709.50x = 124,895,800,836
5. Step 5: Solve for x
   x = 124,895,800,836/162,709.50
6. Step 6: Final answer
   x = 767,599.93