Finding the Third Proportional to 761,578.50 and 1,620,960

Step by Step Solution

1. Step 1: Write the proportion equation
   761,578.50 : 1,620,960 = 1,620,960 : x
2. Step 2: Convert to fraction form
   761,578.50/1,620,960 = 1,620,960/x
3. Step 3: Cross multiply
   761,578.50x = 1,620,960 × 1,620,960
4. Step 4: Simplify right side
   761,578.50x = 2,627,511,321,600
5. Step 5: Solve for x
   x = 2,627,511,321,600/761,578.50
6. Step 6: Final answer
   x = 3,450,086.00