Finding the Third Proportional to 422,970 and 655,360.50

Step by Step Solution

1. Step 1: Write the proportion equation
   422,970 : 655,360.50 = 655,360.50 : x
2. Step 2: Convert to fraction form
   422,970/655,360.50 = 655,360.50/x
3. Step 3: Cross multiply
   422,970x = 655,360.50 × 655,360.50
4. Step 4: Simplify right side
   422,970x = 429,497,384,960.25
5. Step 5: Solve for x
   x = 429,497,384,960.25/422,970
6. Step 6: Final answer
   x = 1,015,432.26