Finding the Third Proportional to 263,433 and 407,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   263,433 : 407,515.50 = 407,515.50 : x
2. Step 2: Convert to fraction form
   263,433/407,515.50 = 407,515.50/x
3. Step 3: Cross multiply
   263,433x = 407,515.50 × 407,515.50
4. Step 4: Simplify right side
   263,433x = 166,068,882,740.25
5. Step 5: Solve for x
   x = 166,068,882,740.25/263,433
6. Step 6: Final answer
   x = 630,402.73