Finding the Third Proportional to 426,186 and 661,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,186 : 661,690.50 = 661,690.50 : x
2. Step 2: Convert to fraction form
   426,186/661,690.50 = 661,690.50/x
3. Step 3: Cross multiply
   426,186x = 661,690.50 × 661,690.50
4. Step 4: Simplify right side
   426,186x = 437,834,317,790.25
5. Step 5: Solve for x
   x = 437,834,317,790.25/426,186
6. Step 6: Final answer
   x = 1,027,331.54