Finding the Third Proportional to 380,488 and 899,820

Step by Step Solution

1. Step 1: Write the proportion equation
   380,488 : 899,820 = 899,820 : x
2. Step 2: Convert to fraction form
   380,488/899,820 = 899,820/x
3. Step 3: Cross multiply
   380,488x = 899,820 × 899,820
4. Step 4: Simplify right side
   380,488x = 809,676,032,400
5. Step 5: Solve for x
   x = 809,676,032,400/380,488
6. Step 6: Final answer
   x = 2,127,993.61