Finding the Third Proportional to 135,963.72 and 296,300.53

Step by Step Solution

1. Step 1: Write the proportion equation
   135,963.72 : 296,300.53 = 296,300.53 : x
2. Step 2: Convert to fraction form
   135,963.72/296,300.53 = 296,300.53/x
3. Step 3: Cross multiply
   135,963.72x = 296,300.53 × 296,300.53
4. Step 4: Simplify right side
   135,963.72x = 87,794,004,819.03
5. Step 5: Solve for x
   x = 87,794,004,819.03/135,963.72
6. Step 6: Final answer
   x = 645,716.40