Finding the Third Proportional to 67,783.50 and 90,553.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,783.50 : 90,553.50 = 90,553.50 : x
2. Step 2: Convert to fraction form
   67,783.50/90,553.50 = 90,553.50/x
3. Step 3: Cross multiply
   67,783.50x = 90,553.50 × 90,553.50
4. Step 4: Simplify right side
   67,783.50x = 8,199,936,362.25
5. Step 5: Solve for x
   x = 8,199,936,362.25/67,783.50
6. Step 6: Final answer
   x = 120,972.45