Finding the Third Proportional to 535,321.50 and 788,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   535,321.50 : 788,191.50 = 788,191.50 : x
2. Step 2: Convert to fraction form
   535,321.50/788,191.50 = 788,191.50/x
3. Step 3: Cross multiply
   535,321.50x = 788,191.50 × 788,191.50
4. Step 4: Simplify right side
   535,321.50x = 621,245,840,672.25
5. Step 5: Solve for x
   x = 621,245,840,672.25/535,321.50
6. Step 6: Final answer
   x = 1,160,509.79