Finding the Third Proportional to 323,417.81 and 680,349.38

Step by Step Solution

1. Step 1: Write the proportion equation
   323,417.81 : 680,349.38 = 680,349.38 : x
2. Step 2: Convert to fraction form
   323,417.81/680,349.38 = 680,349.38/x
3. Step 3: Cross multiply
   323,417.81x = 680,349.38 × 680,349.38
4. Step 4: Simplify right side
   323,417.81x = 462,875,272,062.89
5. Step 5: Solve for x
   x = 462,875,272,062.89/323,417.81
6. Step 6: Final answer
   x = 1,431,199.07