Finding the Third Proportional to 69,772 and 143,216

Step by Step Solution

1. Step 1: Write the proportion equation
   69,772 : 143,216 = 143,216 : x
2. Step 2: Convert to fraction form
   69,772/143,216 = 143,216/x
3. Step 3: Cross multiply
   69,772x = 143,216 × 143,216
4. Step 4: Simplify right side
   69,772x = 20,510,822,656
5. Step 5: Solve for x
   x = 20,510,822,656/69,772
6. Step 6: Final answer
   x = 293,969.25