Finding the Third Proportional to 1,696.78 and 3,419.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,696.78 : 3,419.72 = 3,419.72 : x
2. Step 2: Convert to fraction form
   1,696.78/3,419.72 = 3,419.72/x
3. Step 3: Cross multiply
   1,696.78x = 3,419.72 × 3,419.72
4. Step 4: Simplify right side
   1,696.78x = 11,694,476.33
5. Step 5: Solve for x
   x = 11,694,476.33/1,696.78
6. Step 6: Final answer
   x = 6,892.15