Finding the Third Proportional to 1,368,965 and 2,128,119

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368,965 : 2,128,119 = 2,128,119 : x
2. Step 2: Convert to fraction form
   1,368,965/2,128,119 = 2,128,119/x
3. Step 3: Cross multiply
   1,368,965x = 2,128,119 × 2,128,119
4. Step 4: Simplify right side
   1,368,965x = 4,528,890,478,161
5. Step 5: Solve for x
   x = 4,528,890,478,161/1,368,965
6. Step 6: Final answer
   x = 3,308,258.78