Finding the Third Proportional to 426,177 and 647,041.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,177 : 647,041.50 = 647,041.50 : x
2. Step 2: Convert to fraction form
   426,177/647,041.50 = 647,041.50/x
3. Step 3: Cross multiply
   426,177x = 647,041.50 × 647,041.50
4. Step 4: Simplify right side
   426,177x = 418,662,702,722.25
5. Step 5: Solve for x
   x = 418,662,702,722.25/426,177
6. Step 6: Final answer
   x = 982,368.13