Finding the Third Proportional to 948,456 and 1,686,388

Step by Step Solution

1. Step 1: Write the proportion equation
   948,456 : 1,686,388 = 1,686,388 : x
2. Step 2: Convert to fraction form
   948,456/1,686,388 = 1,686,388/x
3. Step 3: Cross multiply
   948,456x = 1,686,388 × 1,686,388
4. Step 4: Simplify right side
   948,456x = 2,843,904,486,544
5. Step 5: Solve for x
   x = 2,843,904,486,544/948,456
6. Step 6: Final answer
   x = 2,998,456.95