Finding the Third Proportional to 90,699.75 and 196,480.69

Step by Step Solution

1. Step 1: Write the proportion equation
   90,699.75 : 196,480.69 = 196,480.69 : x
2. Step 2: Convert to fraction form
   90,699.75/196,480.69 = 196,480.69/x
3. Step 3: Cross multiply
   90,699.75x = 196,480.69 × 196,480.69
4. Step 4: Simplify right side
   90,699.75x = 38,604,660,560.47
5. Step 5: Solve for x
   x = 38,604,660,560.47/90,699.75
6. Step 6: Final answer
   x = 425,631.39