Finding the Third Proportional to 3,591,381 and 7,881,211

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,381 : 7,881,211 = 7,881,211 : x
2. Step 2: Convert to fraction form
   3,591,381/7,881,211 = 7,881,211/x
3. Step 3: Cross multiply
   3,591,381x = 7,881,211 × 7,881,211
4. Step 4: Simplify right side
   3,591,381x = 62,113,486,826,521
5. Step 5: Solve for x
   x = 62,113,486,826,521/3,591,381
6. Step 6: Final answer
   x = 17,295,153.82