Finding the Third Proportional to 72,916 and 157,216

Step by Step Solution

1. Step 1: Write the proportion equation
   72,916 : 157,216 = 157,216 : x
2. Step 2: Convert to fraction form
   72,916/157,216 = 157,216/x
3. Step 3: Cross multiply
   72,916x = 157,216 × 157,216
4. Step 4: Simplify right side
   72,916x = 24,716,870,656
5. Step 5: Solve for x
   x = 24,716,870,656/72,916
6. Step 6: Final answer
   x = 338,977.33