Finding the Third Proportional to 56,440.50 and 123,375

Step by Step Solution

1. Step 1: Write the proportion equation
   56,440.50 : 123,375 = 123,375 : x
2. Step 2: Convert to fraction form
   56,440.50/123,375 = 123,375/x
3. Step 3: Cross multiply
   56,440.50x = 123,375 × 123,375
4. Step 4: Simplify right side
   56,440.50x = 15,221,390,625
5. Step 5: Solve for x
   x = 15,221,390,625/56,440.50
6. Step 6: Final answer
   x = 269,689.15