Finding the Third Proportional to 380,736 and 900,288

Step by Step Solution

1. Step 1: Write the proportion equation
   380,736 : 900,288 = 900,288 : x
2. Step 2: Convert to fraction form
   380,736/900,288 = 900,288/x
3. Step 3: Cross multiply
   380,736x = 900,288 × 900,288
4. Step 4: Simplify right side
   380,736x = 810,518,482,944
5. Step 5: Solve for x
   x = 810,518,482,944/380,736
6. Step 6: Final answer
   x = 2,128,820.19