Finding the Third Proportional to 694,128 and 1,521,206

Step by Step Solution

1. Step 1: Write the proportion equation
   694,128 : 1,521,206 = 1,521,206 : x
2. Step 2: Convert to fraction form
   694,128/1,521,206 = 1,521,206/x
3. Step 3: Cross multiply
   694,128x = 1,521,206 × 1,521,206
4. Step 4: Simplify right side
   694,128x = 2,314,067,694,436
5. Step 5: Solve for x
   x = 2,314,067,694,436/694,128
6. Step 6: Final answer
   x = 3,333,776.62