Finding the Third Proportional to 3,670,209 and 7,871,768

Step by Step Solution

1. Step 1: Write the proportion equation
   3,670,209 : 7,871,768 = 7,871,768 : x
2. Step 2: Convert to fraction form
   3,670,209/7,871,768 = 7,871,768/x
3. Step 3: Cross multiply
   3,670,209x = 7,871,768 × 7,871,768
4. Step 4: Simplify right side
   3,670,209x = 61,964,731,445,824
5. Step 5: Solve for x
   x = 61,964,731,445,824/3,670,209
6. Step 6: Final answer
   x = 16,883,161.54