Finding the Third Proportional to 21,256,668 and 31,879,443.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,256,668 : 31,879,443.38 = 31,879,443.38 : x
2. Step 2: Convert to fraction form
   21,256,668/31,879,443.38 = 31,879,443.38/x
3. Step 3: Cross multiply
   21,256,668x = 31,879,443.38 × 31,879,443.38
4. Step 4: Simplify right side
   21,256,668x = 1,016,298,909,899,831.38
5. Step 5: Solve for x
   x = 1,016,298,909,899,831.38/21,256,668
6. Step 6: Final answer
   x = 47,810,828.58