Finding the Third Proportional to 72,208 and 168,713.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,208 : 168,713.50 = 168,713.50 : x
2. Step 2: Convert to fraction form
   72,208/168,713.50 = 168,713.50/x
3. Step 3: Cross multiply
   72,208x = 168,713.50 × 168,713.50
4. Step 4: Simplify right side
   72,208x = 28,464,245,082.25
5. Step 5: Solve for x
   x = 28,464,245,082.25/72,208
6. Step 6: Final answer
   x = 394,197.94