Finding the Third Proportional to 2,430,258 and 5,318,220

Step by Step Solution

1. Step 1: Write the proportion equation
   2,430,258 : 5,318,220 = 5,318,220 : x
2. Step 2: Convert to fraction form
   2,430,258/5,318,220 = 5,318,220/x
3. Step 3: Cross multiply
   2,430,258x = 5,318,220 × 5,318,220
4. Step 4: Simplify right side
   2,430,258x = 28,283,463,968,400
5. Step 5: Solve for x
   x = 28,283,463,968,400/2,430,258
6. Step 6: Final answer
   x = 11,638,049.94