Finding the Third Proportional to 648,628 and 1,381,450

Step by Step Solution

1. Step 1: Write the proportion equation
   648,628 : 1,381,450 = 1,381,450 : x
2. Step 2: Convert to fraction form
   648,628/1,381,450 = 1,381,450/x
3. Step 3: Cross multiply
   648,628x = 1,381,450 × 1,381,450
4. Step 4: Simplify right side
   648,628x = 1,908,404,102,500
5. Step 5: Solve for x
   x = 1,908,404,102,500/648,628
6. Step 6: Final answer
   x = 2,942,216.65