Finding the Third Proportional to 358,974.50 and 783,145

Step by Step Solution

1. Step 1: Write the proportion equation
   358,974.50 : 783,145 = 783,145 : x
2. Step 2: Convert to fraction form
   358,974.50/783,145 = 783,145/x
3. Step 3: Cross multiply
   358,974.50x = 783,145 × 783,145
4. Step 4: Simplify right side
   358,974.50x = 613,316,091,025
5. Step 5: Solve for x
   x = 613,316,091,025/358,974.50
6. Step 6: Final answer
   x = 1,708,522.73