Finding the Third Proportional to 19,358,579 and 42,131,063

Step by Step Solution

1. Step 1: Write the proportion equation
   19,358,579 : 42,131,063 = 42,131,063 : x
2. Step 2: Convert to fraction form
   19,358,579/42,131,063 = 42,131,063/x
3. Step 3: Cross multiply
   19,358,579x = 42,131,063 × 42,131,063
4. Step 4: Simplify right side
   19,358,579x = 1,775,026,469,509,969
5. Step 5: Solve for x
   x = 1,775,026,469,509,969/19,358,579
6. Step 6: Final answer
   x = 91,691,981.60