Finding the Third Proportional to 90,634.50 and 199,386

Step by Step Solution

1. Step 1: Write the proportion equation
   90,634.50 : 199,386 = 199,386 : x
2. Step 2: Convert to fraction form
   90,634.50/199,386 = 199,386/x
3. Step 3: Cross multiply
   90,634.50x = 199,386 × 199,386
4. Step 4: Simplify right side
   90,634.50x = 39,754,776,996
5. Step 5: Solve for x
   x = 39,754,776,996/90,634.50
6. Step 6: Final answer
   x = 438,627.42