Finding the Third Proportional to 20,979,168 and 31,661,520

Step by Step Solution

1. Step 1: Write the proportion equation
   20,979,168 : 31,661,520 = 31,661,520 : x
2. Step 2: Convert to fraction form
   20,979,168/31,661,520 = 31,661,520/x
3. Step 3: Cross multiply
   20,979,168x = 31,661,520 × 31,661,520
4. Step 4: Simplify right side
   20,979,168x = 1,002,451,848,710,400
5. Step 5: Solve for x
   x = 1,002,451,848,710,400/20,979,168
6. Step 6: Final answer
   x = 47,783,203.26