Finding the Third Proportional to 145,605,628 and 196,786,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,605,628 : 196,786,665.50 = 196,786,665.50 : x
2. Step 2: Convert to fraction form
   145,605,628/196,786,665.50 = 196,786,665.50/x
3. Step 3: Cross multiply
   145,605,628x = 196,786,665.50 × 196,786,665.50
4. Step 4: Simplify right side
   145,605,628x = 38,724,991,718,608,888
5. Step 5: Solve for x
   x = 38,724,991,718,608,888/145,605,628
6. Step 6: Final answer
   x = 265,958,069.41