Finding the Third Proportional to 90,155 and 192,817.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,155 : 192,817.50 = 192,817.50 : x
2. Step 2: Convert to fraction form
   90,155/192,817.50 = 192,817.50/x
3. Step 3: Cross multiply
   90,155x = 192,817.50 × 192,817.50
4. Step 4: Simplify right side
   90,155x = 37,178,588,306.25
5. Step 5: Solve for x
   x = 37,178,588,306.25/90,155
6. Step 6: Final answer
   x = 412,385.21