Finding the Third Proportional to 3,875,928,601.50 and 8,502,245,329.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,875,928,601.50 : 8,502,245,329.50 = 8,502,245,329.50 : x
2. Step 2: Convert to fraction form
   3,875,928,601.50/8,502,245,329.50 = 8,502,245,329.50/x
3. Step 3: Cross multiply
   3,875,928,601.50x = 8,502,245,329.50 × 8,502,245,329.50
4. Step 4: Simplify right side
   3,875,928,601.50x = 72,288,175,643,004,567,552
5. Step 5: Solve for x
   x = 72,288,175,643,004,567,552/3,875,928,601.50
6. Step 6: Final answer
   x = 18,650,543,669.72