Finding the Third Proportional to 764,685 and 1,147,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   764,685 : 1,147,315.50 = 1,147,315.50 : x
2. Step 2: Convert to fraction form
   764,685/1,147,315.50 = 1,147,315.50/x
3. Step 3: Cross multiply
   764,685x = 1,147,315.50 × 1,147,315.50
4. Step 4: Simplify right side
   764,685x = 1,316,332,856,540.25
5. Step 5: Solve for x
   x = 1,316,332,856,540.25/764,685
6. Step 6: Final answer
   x = 1,721,405.36