Finding the Third Proportional to 1,328,640 and 2,088,192

Step by Step Solution

1. Step 1: Write the proportion equation
   1,328,640 : 2,088,192 = 2,088,192 : x
2. Step 2: Convert to fraction form
   1,328,640/2,088,192 = 2,088,192/x
3. Step 3: Cross multiply
   1,328,640x = 2,088,192 × 2,088,192
4. Step 4: Simplify right side
   1,328,640x = 4,360,545,828,864
5. Step 5: Solve for x
   x = 4,360,545,828,864/1,328,640
6. Step 6: Final answer
   x = 3,281,961.88