Finding the Third Proportional to 426,321 and 656,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,321 : 656,980.50 = 656,980.50 : x
2. Step 2: Convert to fraction form
   426,321/656,980.50 = 656,980.50/x
3. Step 3: Cross multiply
   426,321x = 656,980.50 × 656,980.50
4. Step 4: Simplify right side
   426,321x = 431,623,377,380.25
5. Step 5: Solve for x
   x = 431,623,377,380.25/426,321
6. Step 6: Final answer
   x = 1,012,437.52