Finding the Third Proportional to 53,317.50 and 123,432

Step by Step Solution

1. Step 1: Write the proportion equation
   53,317.50 : 123,432 = 123,432 : x
2. Step 2: Convert to fraction form
   53,317.50/123,432 = 123,432/x
3. Step 3: Cross multiply
   53,317.50x = 123,432 × 123,432
4. Step 4: Simplify right side
   53,317.50x = 15,235,458,624
5. Step 5: Solve for x
   x = 15,235,458,624/53,317.50
6. Step 6: Final answer
   x = 285,749.68