Finding the Third Proportional to 90,975 and 197,490

Step by Step Solution

1. Step 1: Write the proportion equation
   90,975 : 197,490 = 197,490 : x
2. Step 2: Convert to fraction form
   90,975/197,490 = 197,490/x
3. Step 3: Cross multiply
   90,975x = 197,490 × 197,490
4. Step 4: Simplify right side
   90,975x = 39,002,300,100
5. Step 5: Solve for x
   x = 39,002,300,100/90,975
6. Step 6: Final answer
   x = 428,714.48