Finding the Third Proportional to 53,319 and 123,435.75

Step by Step Solution

1. Step 1: Write the proportion equation
   53,319 : 123,435.75 = 123,435.75 : x
2. Step 2: Convert to fraction form
   53,319/123,435.75 = 123,435.75/x
3. Step 3: Cross multiply
   53,319x = 123,435.75 × 123,435.75
4. Step 4: Simplify right side
   53,319x = 15,236,384,378.06
5. Step 5: Solve for x
   x = 15,236,384,378.06/53,319
6. Step 6: Final answer
   x = 285,759.00