Finding the Third Proportional to 615,436 and 903,185

Step by Step Solution

1. Step 1: Write the proportion equation
   615,436 : 903,185 = 903,185 : x
2. Step 2: Convert to fraction form
   615,436/903,185 = 903,185/x
3. Step 3: Cross multiply
   615,436x = 903,185 × 903,185
4. Step 4: Simplify right side
   615,436x = 815,743,144,225
5. Step 5: Solve for x
   x = 815,743,144,225/615,436
6. Step 6: Final answer
   x = 1,325,471.93