Finding the Third Proportional to 280,754 and 610,699.25

Step by Step Solution

1. Step 1: Write the proportion equation
   280,754 : 610,699.25 = 610,699.25 : x
2. Step 2: Convert to fraction form
   280,754/610,699.25 = 610,699.25/x
3. Step 3: Cross multiply
   280,754x = 610,699.25 × 610,699.25
4. Step 4: Simplify right side
   280,754x = 372,953,573,950.56
5. Step 5: Solve for x
   x = 372,953,573,950.56/280,754
6. Step 6: Final answer
   x = 1,328,399.86