Finding the Third Proportional to 19,358,568 and 42,131,041.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,358,568 : 42,131,041.50 = 42,131,041.50 : x
2. Step 2: Convert to fraction form
   19,358,568/42,131,041.50 = 42,131,041.50/x
3. Step 3: Cross multiply
   19,358,568x = 42,131,041.50 × 42,131,041.50
4. Step 4: Simplify right side
   19,358,568x = 1,775,024,657,874,722.25
5. Step 5: Solve for x
   x = 1,775,024,657,874,722.25/19,358,568
6. Step 6: Final answer
   x = 91,691,940.12