Finding the Third Proportional to 90,477 and 198,799.31

Step by Step Solution

1. Step 1: Write the proportion equation
   90,477 : 198,799.31 = 198,799.31 : x
2. Step 2: Convert to fraction form
   90,477/198,799.31 = 198,799.31/x
3. Step 3: Cross multiply
   90,477x = 198,799.31 × 198,799.31
4. Step 4: Simplify right side
   90,477x = 39,521,166,650.47
5. Step 5: Solve for x
   x = 39,521,166,650.47/90,477
6. Step 6: Final answer
   x = 436,808.99