Finding the Third Proportional to 3,914,674 and 8,599,172

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914,674 : 8,599,172 = 8,599,172 : x
2. Step 2: Convert to fraction form
   3,914,674/8,599,172 = 8,599,172/x
3. Step 3: Cross multiply
   3,914,674x = 8,599,172 × 8,599,172
4. Step 4: Simplify right side
   3,914,674x = 73,945,759,085,584
5. Step 5: Solve for x
   x = 73,945,759,085,584/3,914,674
6. Step 6: Final answer
   x = 18,889,378.55