Finding the Third Proportional to 577,679 and 898,022.50

Step by Step Solution

1. Step 1: Write the proportion equation
   577,679 : 898,022.50 = 898,022.50 : x
2. Step 2: Convert to fraction form
   577,679/898,022.50 = 898,022.50/x
3. Step 3: Cross multiply
   577,679x = 898,022.50 × 898,022.50
4. Step 4: Simplify right side
   577,679x = 806,444,410,506.25
5. Step 5: Solve for x
   x = 806,444,410,506.25/577,679
6. Step 6: Final answer
   x = 1,396,007.84