Finding the Third Proportional to 54,818 and 74,280

Step by Step Solution

1. Step 1: Write the proportion equation
   54,818 : 74,280 = 74,280 : x
2. Step 2: Convert to fraction form
   54,818/74,280 = 74,280/x
3. Step 3: Cross multiply
   54,818x = 74,280 × 74,280
4. Step 4: Simplify right side
   54,818x = 5,517,518,400
5. Step 5: Solve for x
   x = 5,517,518,400/54,818
6. Step 6: Final answer
   x = 100,651.58