Finding the Third Proportional to 69,508 and 141,472

Step by Step Solution

1. Step 1: Write the proportion equation
   69,508 : 141,472 = 141,472 : x
2. Step 2: Convert to fraction form
   69,508/141,472 = 141,472/x
3. Step 3: Cross multiply
   69,508x = 141,472 × 141,472
4. Step 4: Simplify right side
   69,508x = 20,014,326,784
5. Step 5: Solve for x
   x = 20,014,326,784/69,508
6. Step 6: Final answer
   x = 287,942.78