Finding the Third Proportional to 90,963 and 212,458.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,963 : 212,458.50 = 212,458.50 : x
2. Step 2: Convert to fraction form
   90,963/212,458.50 = 212,458.50/x
3. Step 3: Cross multiply
   90,963x = 212,458.50 × 212,458.50
4. Step 4: Simplify right side
   90,963x = 45,138,614,222.25
5. Step 5: Solve for x
   x = 45,138,614,222.25/90,963
6. Step 6: Final answer
   x = 496,230.49