Finding the Third Proportional to 126,426.38 and 287,928

Step by Step Solution

1. Step 1: Write the proportion equation
   126,426.38 : 287,928 = 287,928 : x
2. Step 2: Convert to fraction form
   126,426.38/287,928 = 287,928/x
3. Step 3: Cross multiply
   126,426.38x = 287,928 × 287,928
4. Step 4: Simplify right side
   126,426.38x = 82,902,533,184
5. Step 5: Solve for x
   x = 82,902,533,184/126,426.38
6. Step 6: Final answer
   x = 655,737.64