Finding the Third Proportional to 53,320 and 123,437

Step by Step Solution

1. Step 1: Write the proportion equation
   53,320 : 123,437 = 123,437 : x
2. Step 2: Convert to fraction form
   53,320/123,437 = 123,437/x
3. Step 3: Cross multiply
   53,320x = 123,437 × 123,437
4. Step 4: Simplify right side
   53,320x = 15,236,692,969
5. Step 5: Solve for x
   x = 15,236,692,969/53,320
6. Step 6: Final answer
   x = 285,759.43