Finding the Third Proportional to 12,743,555,301.50 and 19,990,877,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743,555,301.50 : 19,990,877,617.50 = 19,990,877,617.50 : x
2. Step 2: Convert to fraction form
   12,743,555,301.50/19,990,877,617.50 = 19,990,877,617.50/x
3. Step 3: Cross multiply
   12,743,555,301.50x = 19,990,877,617.50 × 19,990,877,617.50
4. Step 4: Simplify right side
   12,743,555,301.50x = 399,635,187,917,862,469,632
5. Step 5: Solve for x
   x = 399,635,187,917,862,469,632/12,743,555,301.50
6. Step 6: Final answer
   x = 31,359,787,630.92