Finding the Third Proportional to 700,128 and 1,086,192

Step by Step Solution

1. Step 1: Write the proportion equation
   700,128 : 1,086,192 = 1,086,192 : x
2. Step 2: Convert to fraction form
   700,128/1,086,192 = 1,086,192/x
3. Step 3: Cross multiply
   700,128x = 1,086,192 × 1,086,192
4. Step 4: Simplify right side
   700,128x = 1,179,813,060,864
5. Step 5: Solve for x
   x = 1,179,813,060,864/700,128
6. Step 6: Final answer
   x = 1,685,139.09