Finding the Third Proportional to 342,921.09 and 534,007.69

Step by Step Solution

1. Step 1: Write the proportion equation
   342,921.09 : 534,007.69 = 534,007.69 : x
2. Step 2: Convert to fraction form
   342,921.09/534,007.69 = 534,007.69/x
3. Step 3: Cross multiply
   342,921.09x = 534,007.69 × 534,007.69
4. Step 4: Simplify right side
   342,921.09x = 285,164,210,309.10
5. Step 5: Solve for x
   x = 285,164,210,309.10/342,921.09
6. Step 6: Final answer
   x = 831,573.84