Finding the Third Proportional to 354,769.50 and 788,271

Step by Step Solution

1. Step 1: Write the proportion equation
   354,769.50 : 788,271 = 788,271 : x
2. Step 2: Convert to fraction form
   354,769.50/788,271 = 788,271/x
3. Step 3: Cross multiply
   354,769.50x = 788,271 × 788,271
4. Step 4: Simplify right side
   354,769.50x = 621,371,169,441
5. Step 5: Solve for x
   x = 621,371,169,441/354,769.50
6. Step 6: Final answer
   x = 1,751,478.55