Finding the Third Proportional to 90,775.50 and 199,470

Step by Step Solution

1. Step 1: Write the proportion equation
   90,775.50 : 199,470 = 199,470 : x
2. Step 2: Convert to fraction form
   90,775.50/199,470 = 199,470/x
3. Step 3: Cross multiply
   90,775.50x = 199,470 × 199,470
4. Step 4: Simplify right side
   90,775.50x = 39,788,280,900
5. Step 5: Solve for x
   x = 39,788,280,900/90,775.50
6. Step 6: Final answer
   x = 438,315.19