Finding the Third Proportional to 368,564.34 and 788,363.72

Step by Step Solution

1. Step 1: Write the proportion equation
   368,564.34 : 788,363.72 = 788,363.72 : x
2. Step 2: Convert to fraction form
   368,564.34/788,363.72 = 788,363.72/x
3. Step 3: Cross multiply
   368,564.34x = 788,363.72 × 788,363.72
4. Step 4: Simplify right side
   368,564.34x = 621,517,353,041.33
5. Step 5: Solve for x
   x = 621,517,353,041.33/368,564.34
6. Step 6: Final answer
   x = 1,686,319.81