Finding the Third Proportional to 970,920 and 1,980,396

Step by Step Solution

1. Step 1: Write the proportion equation
   970,920 : 1,980,396 = 1,980,396 : x
2. Step 2: Convert to fraction form
   970,920/1,980,396 = 1,980,396/x
3. Step 3: Cross multiply
   970,920x = 1,980,396 × 1,980,396
4. Step 4: Simplify right side
   970,920x = 3,921,968,316,816
5. Step 5: Solve for x
   x = 3,921,968,316,816/970,920
6. Step 6: Final answer
   x = 4,039,435.09