Finding the Third Proportional to 838,470 and 1,185,289

Step by Step Solution

1. Step 1: Write the proportion equation
   838,470 : 1,185,289 = 1,185,289 : x
2. Step 2: Convert to fraction form
   838,470/1,185,289 = 1,185,289/x
3. Step 3: Cross multiply
   838,470x = 1,185,289 × 1,185,289
4. Step 4: Simplify right side
   838,470x = 1,404,910,013,521
5. Step 5: Solve for x
   x = 1,404,910,013,521/838,470
6. Step 6: Final answer
   x = 1,675,563.84