Finding the Third Proportional to 48,519 and 72,478

Step by Step Solution

1. Step 1: Write the proportion equation
   48,519 : 72,478 = 72,478 : x
2. Step 2: Convert to fraction form
   48,519/72,478 = 72,478/x
3. Step 3: Cross multiply
   48,519x = 72,478 × 72,478
4. Step 4: Simplify right side
   48,519x = 5,253,060,484
5. Step 5: Solve for x
   x = 5,253,060,484/48,519
6. Step 6: Final answer
   x = 108,268.11