Finding the Third Proportional to 90,553.50 and 196,665.75

Step by Step Solution

1. Step 1: Write the proportion equation
   90,553.50 : 196,665.75 = 196,665.75 : x
2. Step 2: Convert to fraction form
   90,553.50/196,665.75 = 196,665.75/x
3. Step 3: Cross multiply
   90,553.50x = 196,665.75 × 196,665.75
4. Step 4: Simplify right side
   90,553.50x = 38,677,417,223.06
5. Step 5: Solve for x
   x = 38,677,417,223.06/90,553.50
6. Step 6: Final answer
   x = 427,122.28