Finding the Third Proportional to 577,854 and 898,242.75

Step by Step Solution

1. Step 1: Write the proportion equation
   577,854 : 898,242.75 = 898,242.75 : x
2. Step 2: Convert to fraction form
   577,854/898,242.75 = 898,242.75/x
3. Step 3: Cross multiply
   577,854x = 898,242.75 × 898,242.75
4. Step 4: Simplify right side
   577,854x = 806,840,037,927.56
5. Step 5: Solve for x
   x = 806,840,037,927.56/577,854
6. Step 6: Final answer
   x = 1,396,269.71