Finding the Third Proportional to 4,487,987 and 9,736,870

Step by Step Solution

1. Step 1: Write the proportion equation
   4,487,987 : 9,736,870 = 9,736,870 : x
2. Step 2: Convert to fraction form
   4,487,987/9,736,870 = 9,736,870/x
3. Step 3: Cross multiply
   4,487,987x = 9,736,870 × 9,736,870
4. Step 4: Simplify right side
   4,487,987x = 94,806,637,396,900
5. Step 5: Solve for x
   x = 94,806,637,396,900/4,487,987
6. Step 6: Final answer
   x = 21,124,534.76