Finding the Third Proportional to 579,729 and 866,929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   579,729 : 866,929.50 = 866,929.50 : x
2. Step 2: Convert to fraction form
   579,729/866,929.50 = 866,929.50/x
3. Step 3: Cross multiply
   579,729x = 866,929.50 × 866,929.50
4. Step 4: Simplify right side
   579,729x = 751,566,757,970.25
5. Step 5: Solve for x
   x = 751,566,757,970.25/579,729
6. Step 6: Final answer
   x = 1,296,410.49