Finding the Third Proportional to 358,916 and 788,587.75

Step by Step Solution

1. Step 1: Write the proportion equation
   358,916 : 788,587.75 = 788,587.75 : x
2. Step 2: Convert to fraction form
   358,916/788,587.75 = 788,587.75/x
3. Step 3: Cross multiply
   358,916x = 788,587.75 × 788,587.75
4. Step 4: Simplify right side
   358,916x = 621,870,639,450.06
5. Step 5: Solve for x
   x = 621,870,639,450.06/358,916
6. Step 6: Final answer
   x = 1,732,635.60