Finding the Third Proportional to 377,713.50 and 811,333.50

Step by Step Solution

1. Step 1: Write the proportion equation
   377,713.50 : 811,333.50 = 811,333.50 : x
2. Step 2: Convert to fraction form
   377,713.50/811,333.50 = 811,333.50/x
3. Step 3: Cross multiply
   377,713.50x = 811,333.50 × 811,333.50
4. Step 4: Simplify right side
   377,713.50x = 658,262,048,222.25
5. Step 5: Solve for x
   x = 658,262,048,222.25/377,713.50
6. Step 6: Final answer
   x = 1,742,754.89