Finding the Third Proportional to 283,338 and 392,707.50

Step by Step Solution

1. Step 1: Write the proportion equation
   283,338 : 392,707.50 = 392,707.50 : x
2. Step 2: Convert to fraction form
   283,338/392,707.50 = 392,707.50/x
3. Step 3: Cross multiply
   283,338x = 392,707.50 × 392,707.50
4. Step 4: Simplify right side
   283,338x = 154,219,180,556.25
5. Step 5: Solve for x
   x = 154,219,180,556.25/283,338
6. Step 6: Final answer
   x = 544,294.03