Finding the Third Proportional to 212,302 and 331,372.50

Step by Step Solution

1. Step 1: Write the proportion equation
   212,302 : 331,372.50 = 331,372.50 : x
2. Step 2: Convert to fraction form
   212,302/331,372.50 = 331,372.50/x
3. Step 3: Cross multiply
   212,302x = 331,372.50 × 331,372.50
4. Step 4: Simplify right side
   212,302x = 109,807,733,756.25
5. Step 5: Solve for x
   x = 109,807,733,756.25/212,302
6. Step 6: Final answer
   x = 517,224.21