Finding the Third Proportional to 615,216 and 1,322,432

Step by Step Solution

1. Step 1: Write the proportion equation
   615,216 : 1,322,432 = 1,322,432 : x
2. Step 2: Convert to fraction form
   615,216/1,322,432 = 1,322,432/x
3. Step 3: Cross multiply
   615,216x = 1,322,432 × 1,322,432
4. Step 4: Simplify right side
   615,216x = 1,748,826,394,624
5. Step 5: Solve for x
   x = 1,748,826,394,624/615,216
6. Step 6: Final answer
   x = 2,842,621.77