Finding the Third Proportional to 3,706,349 and 8,121,286

Step by Step Solution

1. Step 1: Write the proportion equation
   3,706,349 : 8,121,286 = 8,121,286 : x
2. Step 2: Convert to fraction form
   3,706,349/8,121,286 = 8,121,286/x
3. Step 3: Cross multiply
   3,706,349x = 8,121,286 × 8,121,286
4. Step 4: Simplify right side
   3,706,349x = 65,955,286,293,796
5. Step 5: Solve for x
   x = 65,955,286,293,796/3,706,349
6. Step 6: Final answer
   x = 17,795,217.42