Finding the Third Proportional to 138,324 and 281,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,324 : 281,719.50 = 281,719.50 : x
2. Step 2: Convert to fraction form
   138,324/281,719.50 = 281,719.50/x
3. Step 3: Cross multiply
   138,324x = 281,719.50 × 281,719.50
4. Step 4: Simplify right side
   138,324x = 79,365,876,680.25
5. Step 5: Solve for x
   x = 79,365,876,680.25/138,324
6. Step 6: Final answer
   x = 573,767.94