Finding the Third Proportional to 1,689,346 and 3,517,988

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,346 : 3,517,988 = 3,517,988 : x
2. Step 2: Convert to fraction form
   1,689,346/3,517,988 = 3,517,988/x
3. Step 3: Cross multiply
   1,689,346x = 3,517,988 × 3,517,988
4. Step 4: Simplify right side
   1,689,346x = 12,376,239,568,144
5. Step 5: Solve for x
   x = 12,376,239,568,144/1,689,346
6. Step 6: Final answer
   x = 7,326,053.73