Finding the Third Proportional to 90,849.75 and 199,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,849.75 : 199,009.50 = 199,009.50 : x
2. Step 2: Convert to fraction form
   90,849.75/199,009.50 = 199,009.50/x
3. Step 3: Cross multiply
   90,849.75x = 199,009.50 × 199,009.50
4. Step 4: Simplify right side
   90,849.75x = 39,604,781,090.25
5. Step 5: Solve for x
   x = 39,604,781,090.25/90,849.75
6. Step 6: Final answer
   x = 435,937.15