Finding the Third Proportional to 137,599.50 and 281,031

Step by Step Solution

1. Step 1: Write the proportion equation
   137,599.50 : 281,031 = 281,031 : x
2. Step 2: Convert to fraction form
   137,599.50/281,031 = 281,031/x
3. Step 3: Cross multiply
   137,599.50x = 281,031 × 281,031
4. Step 4: Simplify right side
   137,599.50x = 78,978,422,961
5. Step 5: Solve for x
   x = 78,978,422,961/137,599.50
6. Step 6: Final answer
   x = 573,973.18