Finding the Third Proportional to 19,128,568 and 40,986,075.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,128,568 : 40,986,075.50 = 40,986,075.50 : x
2. Step 2: Convert to fraction form
   19,128,568/40,986,075.50 = 40,986,075.50/x
3. Step 3: Cross multiply
   19,128,568x = 40,986,075.50 × 40,986,075.50
4. Step 4: Simplify right side
   19,128,568x = 1,679,858,384,891,700.25
5. Step 5: Solve for x
   x = 1,679,858,384,891,700.25/19,128,568
6. Step 6: Final answer
   x = 87,819,348.78