Finding the Third Proportional to 560,128 and 1,229,116

Step by Step Solution

1. Step 1: Write the proportion equation
   560,128 : 1,229,116 = 1,229,116 : x
2. Step 2: Convert to fraction form
   560,128/1,229,116 = 1,229,116/x
3. Step 3: Cross multiply
   560,128x = 1,229,116 × 1,229,116
4. Step 4: Simplify right side
   560,128x = 1,510,726,141,456
5. Step 5: Solve for x
   x = 1,510,726,141,456/560,128
6. Step 6: Final answer
   x = 2,697,108.77