Finding the Third Proportional to 133,815.38 and 288,520.31

Step by Step Solution

1. Step 1: Write the proportion equation
   133,815.38 : 288,520.31 = 288,520.31 : x
2. Step 2: Convert to fraction form
   133,815.38/288,520.31 = 288,520.31/x
3. Step 3: Cross multiply
   133,815.38x = 288,520.31 × 288,520.31
4. Step 4: Simplify right side
   133,815.38x = 83,243,970,725.10
5. Step 5: Solve for x
   x = 83,243,970,725.10/133,815.38
6. Step 6: Final answer
   x = 622,080.76