Finding the Third Proportional to 2,257,818 and 3,218,553

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257,818 : 3,218,553 = 3,218,553 : x
2. Step 2: Convert to fraction form
   2,257,818/3,218,553 = 3,218,553/x
3. Step 3: Cross multiply
   2,257,818x = 3,218,553 × 3,218,553
4. Step 4: Simplify right side
   2,257,818x = 10,359,083,413,809
5. Step 5: Solve for x
   x = 10,359,083,413,809/2,257,818
6. Step 6: Final answer
   x = 4,588,094.97