Finding the Third Proportional to 915,544 and 1,988,708

Step by Step Solution

1. Step 1: Write the proportion equation
   915,544 : 1,988,708 = 1,988,708 : x
2. Step 2: Convert to fraction form
   915,544/1,988,708 = 1,988,708/x
3. Step 3: Cross multiply
   915,544x = 1,988,708 × 1,988,708
4. Step 4: Simplify right side
   915,544x = 3,954,959,509,264
5. Step 5: Solve for x
   x = 3,954,959,509,264/915,544
6. Step 6: Final answer
   x = 4,319,791.85