Finding the Third Proportional to 772,392 and 1,615,404

Step by Step Solution

1. Step 1: Write the proportion equation
   772,392 : 1,615,404 = 1,615,404 : x
2. Step 2: Convert to fraction form
   772,392/1,615,404 = 1,615,404/x
3. Step 3: Cross multiply
   772,392x = 1,615,404 × 1,615,404
4. Step 4: Simplify right side
   772,392x = 2,609,530,083,216
5. Step 5: Solve for x
   x = 2,609,530,083,216/772,392
6. Step 6: Final answer
   x = 3,378,504.80