Finding the Third Proportional to 2,015,871 and 3,121,317

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015,871 : 3,121,317 = 3,121,317 : x
2. Step 2: Convert to fraction form
   2,015,871/3,121,317 = 3,121,317/x
3. Step 3: Cross multiply
   2,015,871x = 3,121,317 × 3,121,317
4. Step 4: Simplify right side
   2,015,871x = 9,742,619,814,489
5. Step 5: Solve for x
   x = 9,742,619,814,489/2,015,871
6. Step 6: Final answer
   x = 4,832,957.97