Finding the Third Proportional to 280,018 and 614,467.50

Step by Step Solution

1. Step 1: Write the proportion equation
   280,018 : 614,467.50 = 614,467.50 : x
2. Step 2: Convert to fraction form
   280,018/614,467.50 = 614,467.50/x
3. Step 3: Cross multiply
   280,018x = 614,467.50 × 614,467.50
4. Step 4: Simplify right side
   280,018x = 377,570,308,556.25
5. Step 5: Solve for x
   x = 377,570,308,556.25/280,018
6. Step 6: Final answer
   x = 1,348,378.71