Finding the Third Proportional to 135,244 and 210,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   135,244 : 210,520.50 = 210,520.50 : x
2. Step 2: Convert to fraction form
   135,244/210,520.50 = 210,520.50/x
3. Step 3: Cross multiply
   135,244x = 210,520.50 × 210,520.50
4. Step 4: Simplify right side
   135,244x = 44,318,880,920.25
5. Step 5: Solve for x
   x = 44,318,880,920.25/135,244
6. Step 6: Final answer
   x = 327,695.73