Finding the Third Proportional to 3,706,554 and 8,121,693

Step by Step Solution

1. Step 1: Write the proportion equation
   3,706,554 : 8,121,693 = 8,121,693 : x
2. Step 2: Convert to fraction form
   3,706,554/8,121,693 = 8,121,693/x
3. Step 3: Cross multiply
   3,706,554x = 8,121,693 × 8,121,693
4. Step 4: Simplify right side
   3,706,554x = 65,961,897,186,249
5. Step 5: Solve for x
   x = 65,961,897,186,249/3,706,554
6. Step 6: Final answer
   x = 17,796,016.78