Finding the Third Proportional to 138,301.50 and 281,676

Step by Step Solution

1. Step 1: Write the proportion equation
   138,301.50 : 281,676 = 281,676 : x
2. Step 2: Convert to fraction form
   138,301.50/281,676 = 281,676/x
3. Step 3: Cross multiply
   138,301.50x = 281,676 × 281,676
4. Step 4: Simplify right side
   138,301.50x = 79,341,368,976
5. Step 5: Solve for x
   x = 79,341,368,976/138,301.50
6. Step 6: Final answer
   x = 573,684.08