Finding the Third Proportional to 5,261,988 and 7,871,526

Step by Step Solution

1. Step 1: Write the proportion equation
   5,261,988 : 7,871,526 = 7,871,526 : x
2. Step 2: Convert to fraction form
   5,261,988/7,871,526 = 7,871,526/x
3. Step 3: Cross multiply
   5,261,988x = 7,871,526 × 7,871,526
4. Step 4: Simplify right side
   5,261,988x = 61,960,921,568,676
5. Step 5: Solve for x
   x = 61,960,921,568,676/5,261,988
6. Step 6: Final answer
   x = 11,775,192.49