Finding the Third Proportional to 90,153 and 140,143.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,153 : 140,143.50 = 140,143.50 : x
2. Step 2: Convert to fraction form
   90,153/140,143.50 = 140,143.50/x
3. Step 3: Cross multiply
   90,153x = 140,143.50 × 140,143.50
4. Step 4: Simplify right side
   90,153x = 19,640,200,592.25
5. Step 5: Solve for x
   x = 19,640,200,592.25/90,153
6. Step 6: Final answer
   x = 217,854.10