Finding the Third Proportional to 278,792.50 and 443,613.50

Step by Step Solution

1. Step 1: Write the proportion equation
   278,792.50 : 443,613.50 = 443,613.50 : x
2. Step 2: Convert to fraction form
   278,792.50/443,613.50 = 443,613.50/x
3. Step 3: Cross multiply
   278,792.50x = 443,613.50 × 443,613.50
4. Step 4: Simplify right side
   278,792.50x = 196,792,937,382.25
5. Step 5: Solve for x
   x = 196,792,937,382.25/278,792.50
6. Step 6: Final answer
   x = 705,876.01