Finding the Third Proportional to 1,128,988 and 2,435,240

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,988 : 2,435,240 = 2,435,240 : x
2. Step 2: Convert to fraction form
   1,128,988/2,435,240 = 2,435,240/x
3. Step 3: Cross multiply
   1,128,988x = 2,435,240 × 2,435,240
4. Step 4: Simplify right side
   1,128,988x = 5,930,393,857,600
5. Step 5: Solve for x
   x = 5,930,393,857,600/1,128,988
6. Step 6: Final answer
   x = 5,252,840.47