Finding the Third Proportional to 772,440 and 1,615,503

Step by Step Solution

1. Step 1: Write the proportion equation
   772,440 : 1,615,503 = 1,615,503 : x
2. Step 2: Convert to fraction form
   772,440/1,615,503 = 1,615,503/x
3. Step 3: Cross multiply
   772,440x = 1,615,503 × 1,615,503
4. Step 4: Simplify right side
   772,440x = 2,609,849,943,009
5. Step 5: Solve for x
   x = 2,609,849,943,009/772,440
6. Step 6: Final answer
   x = 3,378,708.95