Finding the Third Proportional to 56,977.50 and 124,680

Step by Step Solution

1. Step 1: Write the proportion equation
   56,977.50 : 124,680 = 124,680 : x
2. Step 2: Convert to fraction form
   56,977.50/124,680 = 124,680/x
3. Step 3: Cross multiply
   56,977.50x = 124,680 × 124,680
4. Step 4: Simplify right side
   56,977.50x = 15,545,102,400
5. Step 5: Solve for x
   x = 15,545,102,400/56,977.50
6. Step 6: Final answer
   x = 272,828.79