Finding the Third Proportional to 948,440 and 1,686,356

Step by Step Solution

1. Step 1: Write the proportion equation
   948,440 : 1,686,356 = 1,686,356 : x
2. Step 2: Convert to fraction form
   948,440/1,686,356 = 1,686,356/x
3. Step 3: Cross multiply
   948,440x = 1,686,356 × 1,686,356
4. Step 4: Simplify right side
   948,440x = 2,843,796,558,736
5. Step 5: Solve for x
   x = 2,843,796,558,736/948,440
6. Step 6: Final answer
   x = 2,998,393.74