Finding the Third Proportional to 20,979,144 and 31,661,484

Step by Step Solution

1. Step 1: Write the proportion equation
   20,979,144 : 31,661,484 = 31,661,484 : x
2. Step 2: Convert to fraction form
   20,979,144/31,661,484 = 31,661,484/x
3. Step 3: Cross multiply
   20,979,144x = 31,661,484 × 31,661,484
4. Step 4: Simplify right side
   20,979,144x = 1,002,449,569,082,256
5. Step 5: Solve for x
   x = 1,002,449,569,082,256/20,979,144
6. Step 6: Final answer
   x = 47,783,149.26