Finding the Third Proportional to 3,914,671 and 8,599,166

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914,671 : 8,599,166 = 8,599,166 : x
2. Step 2: Convert to fraction form
   3,914,671/8,599,166 = 8,599,166/x
3. Step 3: Cross multiply
   3,914,671x = 8,599,166 × 8,599,166
4. Step 4: Simplify right side
   3,914,671x = 73,945,655,895,556
5. Step 5: Solve for x
   x = 73,945,655,895,556/3,914,671
6. Step 6: Final answer
   x = 18,889,366.67