Finding the Third Proportional to 90,300 and 135,456

Step by Step Solution

1. Step 1: Write the proportion equation
   90,300 : 135,456 = 135,456 : x
2. Step 2: Convert to fraction form
   90,300/135,456 = 135,456/x
3. Step 3: Cross multiply
   90,300x = 135,456 × 135,456
4. Step 4: Simplify right side
   90,300x = 18,348,327,936
5. Step 5: Solve for x
   x = 18,348,327,936/90,300
6. Step 6: Final answer
   x = 203,193.00