Finding the Third Proportional to 56,385 and 124,434

Step by Step Solution

1. Step 1: Write the proportion equation
   56,385 : 124,434 = 124,434 : x
2. Step 2: Convert to fraction form
   56,385/124,434 = 124,434/x
3. Step 3: Cross multiply
   56,385x = 124,434 × 124,434
4. Step 4: Simplify right side
   56,385x = 15,483,820,356
5. Step 5: Solve for x
   x = 15,483,820,356/56,385
6. Step 6: Final answer
   x = 274,608.86