Finding the Third Proportional to 210,225 and 302,188.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,225 : 302,188.50 = 302,188.50 : x
2. Step 2: Convert to fraction form
   210,225/302,188.50 = 302,188.50/x
3. Step 3: Cross multiply
   210,225x = 302,188.50 × 302,188.50
4. Step 4: Simplify right side
   210,225x = 91,317,889,532.25
5. Step 5: Solve for x
   x = 91,317,889,532.25/210,225
6. Step 6: Final answer
   x = 434,381.68