Finding the Third Proportional to 48,778 and 72,959

Step by Step Solution

1. Step 1: Write the proportion equation
   48,778 : 72,959 = 72,959 : x
2. Step 2: Convert to fraction form
   48,778/72,959 = 72,959/x
3. Step 3: Cross multiply
   48,778x = 72,959 × 72,959
4. Step 4: Simplify right side
   48,778x = 5,323,015,681
5. Step 5: Solve for x
   x = 5,323,015,681/48,778
6. Step 6: Final answer
   x = 109,127.39