Finding the Third Proportional to 283,345.50 and 392,712

Step by Step Solution

1. Step 1: Write the proportion equation
   283,345.50 : 392,712 = 392,712 : x
2. Step 2: Convert to fraction form
   283,345.50/392,712 = 392,712/x
3. Step 3: Cross multiply
   283,345.50x = 392,712 × 392,712
4. Step 4: Simplify right side
   283,345.50x = 154,222,714,944
5. Step 5: Solve for x
   x = 154,222,714,944/283,345.50
6. Step 6: Final answer
   x = 544,292.09