Finding the Third Proportional to 69,510 and 141,476

Step by Step Solution

1. Step 1: Write the proportion equation
   69,510 : 141,476 = 141,476 : x
2. Step 2: Convert to fraction form
   69,510/141,476 = 141,476/x
3. Step 3: Cross multiply
   69,510x = 141,476 × 141,476
4. Step 4: Simplify right side
   69,510x = 20,015,458,576
5. Step 5: Solve for x
   x = 20,015,458,576/69,510
6. Step 6: Final answer
   x = 287,950.78