Finding the Third Proportional to 199,676.25 and 434,340

Step by Step Solution

1. Step 1: Write the proportion equation
   199,676.25 : 434,340 = 434,340 : x
2. Step 2: Convert to fraction form
   199,676.25/434,340 = 434,340/x
3. Step 3: Cross multiply
   199,676.25x = 434,340 × 434,340
4. Step 4: Simplify right side
   199,676.25x = 188,651,235,600
5. Step 5: Solve for x
   x = 188,651,235,600/199,676.25
6. Step 6: Final answer
   x = 944,785.55