Finding the Third Proportional to 136,282.50 and 318,330

Step by Step Solution

1. Step 1: Write the proportion equation
   136,282.50 : 318,330 = 318,330 : x
2. Step 2: Convert to fraction form
   136,282.50/318,330 = 318,330/x
3. Step 3: Cross multiply
   136,282.50x = 318,330 × 318,330
4. Step 4: Simplify right side
   136,282.50x = 101,333,988,900
5. Step 5: Solve for x
   x = 101,333,988,900/136,282.50
6. Step 6: Final answer
   x = 743,558.34