Finding the Third Proportional to 250,740 and 522,216

Step by Step Solution

1. Step 1: Write the proportion equation
   250,740 : 522,216 = 522,216 : x
2. Step 2: Convert to fraction form
   250,740/522,216 = 522,216/x
3. Step 3: Cross multiply
   250,740x = 522,216 × 522,216
4. Step 4: Simplify right side
   250,740x = 272,709,550,656
5. Step 5: Solve for x
   x = 272,709,550,656/250,740
6. Step 6: Final answer
   x = 1,087,618.85