Finding the Third Proportional to 21,720,608 and 31,870,860

Step by Step Solution

1. Step 1: Write the proportion equation
   21,720,608 : 31,870,860 = 31,870,860 : x
2. Step 2: Convert to fraction form
   21,720,608/31,870,860 = 31,870,860/x
3. Step 3: Cross multiply
   21,720,608x = 31,870,860 × 31,870,860
4. Step 4: Simplify right side
   21,720,608x = 1,015,751,717,139,600
5. Step 5: Solve for x
   x = 1,015,751,717,139,600/21,720,608
6. Step 6: Final answer
   x = 46,764,423.77