Finding the Third Proportional to 2,318,590 and 4,945,320

Step by Step Solution

1. Step 1: Write the proportion equation
   2,318,590 : 4,945,320 = 4,945,320 : x
2. Step 2: Convert to fraction form
   2,318,590/4,945,320 = 4,945,320/x
3. Step 3: Cross multiply
   2,318,590x = 4,945,320 × 4,945,320
4. Step 4: Simplify right side
   2,318,590x = 24,456,189,902,400
5. Step 5: Solve for x
   x = 24,456,189,902,400/2,318,590
6. Step 6: Final answer
   x = 10,547,871.72