Finding the Third Proportional to 280,672.50 and 612,132

Step by Step Solution

1. Step 1: Write the proportion equation
   280,672.50 : 612,132 = 612,132 : x
2. Step 2: Convert to fraction form
   280,672.50/612,132 = 612,132/x
3. Step 3: Cross multiply
   280,672.50x = 612,132 × 612,132
4. Step 4: Simplify right side
   280,672.50x = 374,705,585,424
5. Step 5: Solve for x
   x = 374,705,585,424/280,672.50
6. Step 6: Final answer
   x = 1,335,027.78