Finding the Third Proportional to 91,389.94 and 200,436.19

Step by Step Solution

1. Step 1: Write the proportion equation
   91,389.94 : 200,436.19 = 200,436.19 : x
2. Step 2: Convert to fraction form
   91,389.94/200,436.19 = 200,436.19/x
3. Step 3: Cross multiply
   91,389.94x = 200,436.19 × 200,436.19
4. Step 4: Simplify right side
   91,389.94x = 40,174,665,259.54
5. Step 5: Solve for x
   x = 40,174,665,259.54/91,389.94
6. Step 6: Final answer
   x = 439,596.16