Finding the Third Proportional to 138,300.50 and 281,674

Step by Step Solution

1. Step 1: Write the proportion equation
   138,300.50 : 281,674 = 281,674 : x
2. Step 2: Convert to fraction form
   138,300.50/281,674 = 281,674/x
3. Step 3: Cross multiply
   138,300.50x = 281,674 × 281,674
4. Step 4: Simplify right side
   138,300.50x = 79,340,242,276
5. Step 5: Solve for x
   x = 79,340,242,276/138,300.50
6. Step 6: Final answer
   x = 573,680.08