Finding the Third Proportional to 210,756.94 and 321,382.69

Step by Step Solution

1. Step 1: Write the proportion equation
   210,756.94 : 321,382.69 = 321,382.69 : x
2. Step 2: Convert to fraction form
   210,756.94/321,382.69 = 321,382.69/x
3. Step 3: Cross multiply
   210,756.94x = 321,382.69 × 321,382.69
4. Step 4: Simplify right side
   210,756.94x = 103,286,831,824.72
5. Step 5: Solve for x
   x = 103,286,831,824.72/210,756.94
6. Step 6: Final answer
   x = 490,075.60