Finding the Third Proportional to 48,328 and 72,490

Step by Step Solution

1. Step 1: Write the proportion equation
   48,328 : 72,490 = 72,490 : x
2. Step 2: Convert to fraction form
   48,328/72,490 = 72,490/x
3. Step 3: Cross multiply
   48,328x = 72,490 × 72,490
4. Step 4: Simplify right side
   48,328x = 5,254,800,100
5. Step 5: Solve for x
   x = 5,254,800,100/48,328
6. Step 6: Final answer
   x = 108,732.00