Finding the Third Proportional to 670,128 and 1,036,312

Step by Step Solution

1. Step 1: Write the proportion equation
   670,128 : 1,036,312 = 1,036,312 : x
2. Step 2: Convert to fraction form
   670,128/1,036,312 = 1,036,312/x
3. Step 3: Cross multiply
   670,128x = 1,036,312 × 1,036,312
4. Step 4: Simplify right side
   670,128x = 1,073,942,561,344
5. Step 5: Solve for x
   x = 1,073,942,561,344/670,128
6. Step 6: Final answer
   x = 1,602,593.18