Finding the Third Proportional to 2,129,622 and 4,618,564

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,622 : 4,618,564 = 4,618,564 : x
2. Step 2: Convert to fraction form
   2,129,622/4,618,564 = 4,618,564/x
3. Step 3: Cross multiply
   2,129,622x = 4,618,564 × 4,618,564
4. Step 4: Simplify right side
   2,129,622x = 21,331,133,422,096
5. Step 5: Solve for x
   x = 21,331,133,422,096/2,129,622
6. Step 6: Final answer
   x = 10,016,394.19