Finding the Third Proportional to 547,119 and 818,491.50

Step by Step Solution

1. Step 1: Write the proportion equation
   547,119 : 818,491.50 = 818,491.50 : x
2. Step 2: Convert to fraction form
   547,119/818,491.50 = 818,491.50/x
3. Step 3: Cross multiply
   547,119x = 818,491.50 × 818,491.50
4. Step 4: Simplify right side
   547,119x = 669,928,335,572.25
5. Step 5: Solve for x
   x = 669,928,335,572.25/547,119
6. Step 6: Final answer
   x = 1,224,465.49