Finding the Third Proportional to 631,720 and 1,381,540

Step by Step Solution

1. Step 1: Write the proportion equation
   631,720 : 1,381,540 = 1,381,540 : x
2. Step 2: Convert to fraction form
   631,720/1,381,540 = 1,381,540/x
3. Step 3: Cross multiply
   631,720x = 1,381,540 × 1,381,540
4. Step 4: Simplify right side
   631,720x = 1,908,652,771,600
5. Step 5: Solve for x
   x = 1,908,652,771,600/631,720
6. Step 6: Final answer
   x = 3,021,358.78