Finding the Third Proportional to 2,578,860,484.50 and 3,871,020,265.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,860,484.50 : 3,871,020,265.50 = 3,871,020,265.50 : x
2. Step 2: Convert to fraction form
   2,578,860,484.50/3,871,020,265.50 = 3,871,020,265.50/x
3. Step 3: Cross multiply
   2,578,860,484.50x = 3,871,020,265.50 × 3,871,020,265.50
4. Step 4: Simplify right side
   2,578,860,484.50x = 14,984,797,895,911,690,240
5. Step 5: Solve for x
   x = 14,984,797,895,911,690,240/2,578,860,484.50
6. Step 6: Final answer
   x = 5,810,627,595.40