Finding the Third Proportional to 253,207 and 400,951.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253,207 : 400,951.50 = 400,951.50 : x
2. Step 2: Convert to fraction form
   253,207/400,951.50 = 400,951.50/x
3. Step 3: Cross multiply
   253,207x = 400,951.50 × 400,951.50
4. Step 4: Simplify right side
   253,207x = 160,762,105,352.25
5. Step 5: Solve for x
   x = 160,762,105,352.25/253,207
6. Step 6: Final answer
   x = 634,903.87