Finding the Third Proportional to 18,131,358.50 and 37,325,538

Step by Step Solution

1. Step 1: Write the proportion equation
   18,131,358.50 : 37,325,538 = 37,325,538 : x
2. Step 2: Convert to fraction form
   18,131,358.50/37,325,538 = 37,325,538/x
3. Step 3: Cross multiply
   18,131,358.50x = 37,325,538 × 37,325,538
4. Step 4: Simplify right side
   18,131,358.50x = 1,393,195,786,989,444
5. Step 5: Solve for x
   x = 1,393,195,786,989,444/18,131,358.50
6. Step 6: Final answer
   x = 76,839,018.27