Finding the Third Proportional to 1,287,707,389.50 and 2,789,340,837

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,707,389.50 : 2,789,340,837 = 2,789,340,837 : x
2. Step 2: Convert to fraction form
   1,287,707,389.50/2,789,340,837 = 2,789,340,837/x
3. Step 3: Cross multiply
   1,287,707,389.50x = 2,789,340,837 × 2,789,340,837
4. Step 4: Simplify right side
   1,287,707,389.50x = 7,780,422,304,955,860,992
5. Step 5: Solve for x
   x = 7,780,422,304,955,860,992/1,287,707,389.50
6. Step 6: Final answer
   x = 6,042,073,197.99