Finding the Third Proportional to 128,245,704 and 260,059,993.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,245,704 : 260,059,993.50 = 260,059,993.50 : x
2. Step 2: Convert to fraction form
   128,245,704/260,059,993.50 = 260,059,993.50/x
3. Step 3: Cross multiply
   128,245,704x = 260,059,993.50 × 260,059,993.50
4. Step 4: Simplify right side
   128,245,704x = 67,631,200,219,220,040
5. Step 5: Solve for x
   x = 67,631,200,219,220,040/128,245,704
6. Step 6: Final answer
   x = 527,356,458.03