Finding the Third Proportional to 269,118.50 and 634,388

Step by Step Solution

1. Step 1: Write the proportion equation
   269,118.50 : 634,388 = 634,388 : x
2. Step 2: Convert to fraction form
   269,118.50/634,388 = 634,388/x
3. Step 3: Cross multiply
   269,118.50x = 634,388 × 634,388
4. Step 4: Simplify right side
   269,118.50x = 402,448,134,544
5. Step 5: Solve for x
   x = 402,448,134,544/269,118.50
6. Step 6: Final answer
   x = 1,495,430.95