Finding the Third Proportional to 20,828,992 and 42,672,752

Step by Step Solution

1. Step 1: Write the proportion equation
   20,828,992 : 42,672,752 = 42,672,752 : x
2. Step 2: Convert to fraction form
   20,828,992/42,672,752 = 42,672,752/x
3. Step 3: Cross multiply
   20,828,992x = 42,672,752 × 42,672,752
4. Step 4: Simplify right side
   20,828,992x = 1,820,963,763,253,504
5. Step 5: Solve for x
   x = 1,820,963,763,253,504/20,828,992
6. Step 6: Final answer
   x = 87,424,478.50