Finding the Third Proportional to 426,190.50 and 661,698

Step by Step Solution

1. Step 1: Write the proportion equation
   426,190.50 : 661,698 = 661,698 : x
2. Step 2: Convert to fraction form
   426,190.50/661,698 = 661,698/x
3. Step 3: Cross multiply
   426,190.50x = 661,698 × 661,698
4. Step 4: Simplify right side
   426,190.50x = 437,844,243,204
5. Step 5: Solve for x
   x = 437,844,243,204/426,190.50
6. Step 6: Final answer
   x = 1,027,343.98