Finding the Third Proportional to 210,240 and 326,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,240 : 326,434.50 = 326,434.50 : x
2. Step 2: Convert to fraction form
   210,240/326,434.50 = 326,434.50/x
3. Step 3: Cross multiply
   210,240x = 326,434.50 × 326,434.50
4. Step 4: Simplify right side
   210,240x = 106,559,482,790.25
5. Step 5: Solve for x
   x = 106,559,482,790.25/210,240
6. Step 6: Final answer
   x = 506,846.85