Finding the Third Proportional to 67,690 and 156,009

Step by Step Solution

1. Step 1: Write the proportion equation
   67,690 : 156,009 = 156,009 : x
2. Step 2: Convert to fraction form
   67,690/156,009 = 156,009/x
3. Step 3: Cross multiply
   67,690x = 156,009 × 156,009
4. Step 4: Simplify right side
   67,690x = 24,338,808,081
5. Step 5: Solve for x
   x = 24,338,808,081/67,690
6. Step 6: Final answer
   x = 359,562.83