Finding the Third Proportional to 123,640 and 237,424

Step by Step Solution

1. Step 1: Write the proportion equation
   123,640 : 237,424 = 237,424 : x
2. Step 2: Convert to fraction form
   123,640/237,424 = 237,424/x
3. Step 3: Cross multiply
   123,640x = 237,424 × 237,424
4. Step 4: Simplify right side
   123,640x = 56,370,155,776
5. Step 5: Solve for x
   x = 56,370,155,776/123,640
6. Step 6: Final answer
   x = 455,921.67