Finding the Third Proportional to 1,716,978 and 3,390,720

Step by Step Solution

1. Step 1: Write the proportion equation
   1,716,978 : 3,390,720 = 3,390,720 : x
2. Step 2: Convert to fraction form
   1,716,978/3,390,720 = 3,390,720/x
3. Step 3: Cross multiply
   1,716,978x = 3,390,720 × 3,390,720
4. Step 4: Simplify right side
   1,716,978x = 11,496,982,118,400
5. Step 5: Solve for x
   x = 11,496,982,118,400/1,716,978
6. Step 6: Final answer
   x = 6,696,056.75