Finding the Third Proportional to 5,269,671 and 7,860,789

Step by Step Solution

1. Step 1: Write the proportion equation
   5,269,671 : 7,860,789 = 7,860,789 : x
2. Step 2: Convert to fraction form
   5,269,671/7,860,789 = 7,860,789/x
3. Step 3: Cross multiply
   5,269,671x = 7,860,789 × 7,860,789
4. Step 4: Simplify right side
   5,269,671x = 61,792,003,702,521
5. Step 5: Solve for x
   x = 61,792,003,702,521/5,269,671
6. Step 6: Final answer
   x = 11,725,969.93