Finding the Third Proportional to 365,047.50 and 780,540

Step by Step Solution

1. Step 1: Write the proportion equation
   365,047.50 : 780,540 = 780,540 : x
2. Step 2: Convert to fraction form
   365,047.50/780,540 = 780,540/x
3. Step 3: Cross multiply
   365,047.50x = 780,540 × 780,540
4. Step 4: Simplify right side
   365,047.50x = 609,242,691,600
5. Step 5: Solve for x
   x = 609,242,691,600/365,047.50
6. Step 6: Final answer
   x = 1,668,940.87