Finding the Third Proportional to 385,107.75 and 821,736

Step by Step Solution

1. Step 1: Write the proportion equation
   385,107.75 : 821,736 = 821,736 : x
2. Step 2: Convert to fraction form
   385,107.75/821,736 = 821,736/x
3. Step 3: Cross multiply
   385,107.75x = 821,736 × 821,736
4. Step 4: Simplify right side
   385,107.75x = 675,250,053,696
5. Step 5: Solve for x
   x = 675,250,053,696/385,107.75
6. Step 6: Final answer
   x = 1,753,405.52