Finding the Third Proportional to 572,769 and 866,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   572,769 : 866,389.50 = 866,389.50 : x
2. Step 2: Convert to fraction form
   572,769/866,389.50 = 866,389.50/x
3. Step 3: Cross multiply
   572,769x = 866,389.50 × 866,389.50
4. Step 4: Simplify right side
   572,769x = 750,630,765,710.25
5. Step 5: Solve for x
   x = 750,630,765,710.25/572,769
6. Step 6: Final answer
   x = 1,310,529.67