Finding the Third Proportional to 45,149 and 68,870

Step by Step Solution

1. Step 1: Write the proportion equation
   45,149 : 68,870 = 68,870 : x
2. Step 2: Convert to fraction form
   45,149/68,870 = 68,870/x
3. Step 3: Cross multiply
   45,149x = 68,870 × 68,870
4. Step 4: Simplify right side
   45,149x = 4,743,076,900
5. Step 5: Solve for x
   x = 4,743,076,900/45,149
6. Step 6: Final answer
   x = 105,053.86