Finding the Third Proportional to 90,656 and 199,434

Step by Step Solution

1. Step 1: Write the proportion equation
   90,656 : 199,434 = 199,434 : x
2. Step 2: Convert to fraction form
   90,656/199,434 = 199,434/x
3. Step 3: Cross multiply
   90,656x = 199,434 × 199,434
4. Step 4: Simplify right side
   90,656x = 39,773,920,356
5. Step 5: Solve for x
   x = 39,773,920,356/90,656
6. Step 6: Final answer
   x = 438,734.56