Finding the Third Proportional to 21,355,768 and 50,390,962

Step by Step Solution

1. Step 1: Write the proportion equation
   21,355,768 : 50,390,962 = 50,390,962 : x
2. Step 2: Convert to fraction form
   21,355,768/50,390,962 = 50,390,962/x
3. Step 3: Cross multiply
   21,355,768x = 50,390,962 × 50,390,962
4. Step 4: Simplify right side
   21,355,768x = 2,539,249,051,285,444
5. Step 5: Solve for x
   x = 2,539,249,051,285,444/21,355,768
6. Step 6: Final answer
   x = 118,902,258.69