Finding the Third Proportional to 278,940 and 572,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   278,940 : 572,581.50 = 572,581.50 : x
2. Step 2: Convert to fraction form
   278,940/572,581.50 = 572,581.50/x
3. Step 3: Cross multiply
   278,940x = 572,581.50 × 572,581.50
4. Step 4: Simplify right side
   278,940x = 327,849,574,142.25
5. Step 5: Solve for x
   x = 327,849,574,142.25/278,940
6. Step 6: Final answer
   x = 1,175,340.84