Finding the Third Proportional to 1,090,304 and 1,690,368

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090,304 : 1,690,368 = 1,690,368 : x
2. Step 2: Convert to fraction form
   1,090,304/1,690,368 = 1,690,368/x
3. Step 3: Cross multiply
   1,090,304x = 1,690,368 × 1,690,368
4. Step 4: Simplify right side
   1,090,304x = 2,857,343,975,424
5. Step 5: Solve for x
   x = 2,857,343,975,424/1,090,304
6. Step 6: Final answer
   x = 2,620,685.58