Finding the Third Proportional to 90,554.50 and 196,667

Step by Step Solution

1. Step 1: Write the proportion equation
   90,554.50 : 196,667 = 196,667 : x
2. Step 2: Convert to fraction form
   90,554.50/196,667 = 196,667/x
3. Step 3: Cross multiply
   90,554.50x = 196,667 × 196,667
4. Step 4: Simplify right side
   90,554.50x = 38,677,908,889
5. Step 5: Solve for x
   x = 38,677,908,889/90,554.50
6. Step 6: Final answer
   x = 427,122.99