Finding the Third Proportional to 231,945.61 and 359,141.47

Step by Step Solution

1. Step 1: Write the proportion equation
   231,945.61 : 359,141.47 = 359,141.47 : x
2. Step 2: Convert to fraction form
   231,945.61/359,141.47 = 359,141.47/x
3. Step 3: Cross multiply
   231,945.61x = 359,141.47 × 359,141.47
4. Step 4: Simplify right side
   231,945.61x = 128,982,593,567.57
5. Step 5: Solve for x
   x = 128,982,593,567.57/231,945.61
6. Step 6: Final answer
   x = 556,089.83