Finding the Third Proportional to 4,211,306 and 8,622,108

Step by Step Solution

1. Step 1: Write the proportion equation
   4,211,306 : 8,622,108 = 8,622,108 : x
2. Step 2: Convert to fraction form
   4,211,306/8,622,108 = 8,622,108/x
3. Step 3: Cross multiply
   4,211,306x = 8,622,108 × 8,622,108
4. Step 4: Simplify right side
   4,211,306x = 74,340,746,363,664
5. Step 5: Solve for x
   x = 74,340,746,363,664/4,211,306
6. Step 6: Final answer
   x = 17,652,658.43