Finding the Third Proportional to 445,144.50 and 986,355

Step by Step Solution

1. Step 1: Write the proportion equation
   445,144.50 : 986,355 = 986,355 : x
2. Step 2: Convert to fraction form
   445,144.50/986,355 = 986,355/x
3. Step 3: Cross multiply
   445,144.50x = 986,355 × 986,355
4. Step 4: Simplify right side
   445,144.50x = 972,896,186,025
5. Step 5: Solve for x
   x = 972,896,186,025/445,144.50
6. Step 6: Final answer
   x = 2,185,573.87