Finding the Third Proportional to 56,728 and 132,492

Step by Step Solution

1. Step 1: Write the proportion equation
   56,728 : 132,492 = 132,492 : x
2. Step 2: Convert to fraction form
   56,728/132,492 = 132,492/x
3. Step 3: Cross multiply
   56,728x = 132,492 × 132,492
4. Step 4: Simplify right side
   56,728x = 17,554,130,064
5. Step 5: Solve for x
   x = 17,554,130,064/56,728
6. Step 6: Final answer
   x = 309,443.84