Finding the Third Proportional to 90,823.50 and 199,710

Step by Step Solution

1. Step 1: Write the proportion equation
   90,823.50 : 199,710 = 199,710 : x
2. Step 2: Convert to fraction form
   90,823.50/199,710 = 199,710/x
3. Step 3: Cross multiply
   90,823.50x = 199,710 × 199,710
4. Step 4: Simplify right side
   90,823.50x = 39,884,084,100
5. Step 5: Solve for x
   x = 39,884,084,100/90,823.50
6. Step 6: Final answer
   x = 439,138.37