Finding the Third Proportional to 348,340.50 and 763,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   348,340.50 : 763,870.50 = 763,870.50 : x
2. Step 2: Convert to fraction form
   348,340.50/763,870.50 = 763,870.50/x
3. Step 3: Cross multiply
   348,340.50x = 763,870.50 × 763,870.50
4. Step 4: Simplify right side
   348,340.50x = 583,498,140,770.25
5. Step 5: Solve for x
   x = 583,498,140,770.25/348,340.50
6. Step 6: Final answer
   x = 1,675,079.82