Finding the Third Proportional to 48,780 and 72,961

Step by Step Solution

1. Step 1: Write the proportion equation
   48,780 : 72,961 = 72,961 : x
2. Step 2: Convert to fraction form
   48,780/72,961 = 72,961/x
3. Step 3: Cross multiply
   48,780x = 72,961 × 72,961
4. Step 4: Simplify right side
   48,780x = 5,323,307,521
5. Step 5: Solve for x
   x = 5,323,307,521/48,780
6. Step 6: Final answer
   x = 109,128.90