Finding the Third Proportional to 615,116 and 1,331,320

Step by Step Solution

1. Step 1: Write the proportion equation
   615,116 : 1,331,320 = 1,331,320 : x
2. Step 2: Convert to fraction form
   615,116/1,331,320 = 1,331,320/x
3. Step 3: Cross multiply
   615,116x = 1,331,320 × 1,331,320
4. Step 4: Simplify right side
   615,116x = 1,772,412,942,400
5. Step 5: Solve for x
   x = 1,772,412,942,400/615,116
6. Step 6: Final answer
   x = 2,881,428.78