Finding the Third Proportional to 2,212,820 and 4,506,792

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212,820 : 4,506,792 = 4,506,792 : x
2. Step 2: Convert to fraction form
   2,212,820/4,506,792 = 4,506,792/x
3. Step 3: Cross multiply
   2,212,820x = 4,506,792 × 4,506,792
4. Step 4: Simplify right side
   2,212,820x = 20,311,174,131,264
5. Step 5: Solve for x
   x = 20,311,174,131,264/2,212,820
6. Step 6: Final answer
   x = 9,178,864.13