Finding the Third Proportional to 20,117,628 and 41,164,920

Step by Step Solution

1. Step 1: Write the proportion equation
   20,117,628 : 41,164,920 = 41,164,920 : x
2. Step 2: Convert to fraction form
   20,117,628/41,164,920 = 41,164,920/x
3. Step 3: Cross multiply
   20,117,628x = 41,164,920 × 41,164,920
4. Step 4: Simplify right side
   20,117,628x = 1,694,550,638,606,400
5. Step 5: Solve for x
   x = 1,694,550,638,606,400/20,117,628
6. Step 6: Final answer
   x = 84,232,129.09