Finding the Third Proportional to 639,141 and 1,368,061

Step by Step Solution

1. Step 1: Write the proportion equation
   639,141 : 1,368,061 = 1,368,061 : x
2. Step 2: Convert to fraction form
   639,141/1,368,061 = 1,368,061/x
3. Step 3: Cross multiply
   639,141x = 1,368,061 × 1,368,061
4. Step 4: Simplify right side
   639,141x = 1,871,590,899,721
5. Step 5: Solve for x
   x = 1,871,590,899,721/639,141
6. Step 6: Final answer
   x = 2,928,291.10