Finding the Third Proportional to 683,215 and 1,085,648

Step by Step Solution

1. Step 1: Write the proportion equation
   683,215 : 1,085,648 = 1,085,648 : x
2. Step 2: Convert to fraction form
   683,215/1,085,648 = 1,085,648/x
3. Step 3: Cross multiply
   683,215x = 1,085,648 × 1,085,648
4. Step 4: Simplify right side
   683,215x = 1,178,631,579,904
5. Step 5: Solve for x
   x = 1,178,631,579,904/683,215
6. Step 6: Final answer
   x = 1,725,125.44