Finding the Third Proportional to 162,091.50 and 260,436

Step by Step Solution

1. Step 1: Write the proportion equation
   162,091.50 : 260,436 = 260,436 : x
2. Step 2: Convert to fraction form
   162,091.50/260,436 = 260,436/x
3. Step 3: Cross multiply
   162,091.50x = 260,436 × 260,436
4. Step 4: Simplify right side
   162,091.50x = 67,826,910,096
5. Step 5: Solve for x
   x = 67,826,910,096/162,091.50
6. Step 6: Final answer
   x = 418,448.28