Finding the Third Proportional to 1,134,912 and 1,686,288

Step by Step Solution

1. Step 1: Write the proportion equation
   1,134,912 : 1,686,288 = 1,686,288 : x
2. Step 2: Convert to fraction form
   1,134,912/1,686,288 = 1,686,288/x
3. Step 3: Cross multiply
   1,134,912x = 1,686,288 × 1,686,288
4. Step 4: Simplify right side
   1,134,912x = 2,843,567,218,944
5. Step 5: Solve for x
   x = 2,843,567,218,944/1,134,912
6. Step 6: Final answer
   x = 2,505,539.83