Finding the Third Proportional to 48,621 and 72,981

Step by Step Solution

1. Step 1: Write the proportion equation
   48,621 : 72,981 = 72,981 : x
2. Step 2: Convert to fraction form
   48,621/72,981 = 72,981/x
3. Step 3: Cross multiply
   48,621x = 72,981 × 72,981
4. Step 4: Simplify right side
   48,621x = 5,326,226,361
5. Step 5: Solve for x
   x = 5,326,226,361/48,621
6. Step 6: Final answer
   x = 109,545.80