Finding the Third Proportional to 6,321,123 and 13,872,609

Step by Step Solution

1. Step 1: Write the proportion equation
   6,321,123 : 13,872,609 = 13,872,609 : x
2. Step 2: Convert to fraction form
   6,321,123/13,872,609 = 13,872,609/x
3. Step 3: Cross multiply
   6,321,123x = 13,872,609 × 13,872,609
4. Step 4: Simplify right side
   6,321,123x = 192,449,280,466,881
5. Step 5: Solve for x
   x = 192,449,280,466,881/6,321,123
6. Step 6: Final answer
   x = 30,445,425.67