Finding the Third Proportional to 539,217 and 825,187.50

Step by Step Solution

1. Step 1: Write the proportion equation
   539,217 : 825,187.50 = 825,187.50 : x
2. Step 2: Convert to fraction form
   539,217/825,187.50 = 825,187.50/x
3. Step 3: Cross multiply
   539,217x = 825,187.50 × 825,187.50
4. Step 4: Simplify right side
   539,217x = 680,934,410,156.25
5. Step 5: Solve for x
   x = 680,934,410,156.25/539,217
6. Step 6: Final answer
   x = 1,262,820.74