Finding the Third Proportional to 761,578 and 1,620,958

Step by Step Solution

1. Step 1: Write the proportion equation
   761,578 : 1,620,958 = 1,620,958 : x
2. Step 2: Convert to fraction form
   761,578/1,620,958 = 1,620,958/x
3. Step 3: Cross multiply
   761,578x = 1,620,958 × 1,620,958
4. Step 4: Simplify right side
   761,578x = 2,627,504,837,764
5. Step 5: Solve for x
   x = 2,627,504,837,764/761,578
6. Step 6: Final answer
   x = 3,450,079.75