Finding the Third Proportional to 54,877.50 and 122,931

Step by Step Solution

1. Step 1: Write the proportion equation
   54,877.50 : 122,931 = 122,931 : x
2. Step 2: Convert to fraction form
   54,877.50/122,931 = 122,931/x
3. Step 3: Cross multiply
   54,877.50x = 122,931 × 122,931
4. Step 4: Simplify right side
   54,877.50x = 15,112,030,761
5. Step 5: Solve for x
   x = 15,112,030,761/54,877.50
6. Step 6: Final answer
   x = 275,377.54