Finding the Third Proportional to 870,644 and 1,182,312

Step by Step Solution

1. Step 1: Write the proportion equation
   870,644 : 1,182,312 = 1,182,312 : x
2. Step 2: Convert to fraction form
   870,644/1,182,312 = 1,182,312/x
3. Step 3: Cross multiply
   870,644x = 1,182,312 × 1,182,312
4. Step 4: Simplify right side
   870,644x = 1,397,861,665,344
5. Step 5: Solve for x
   x = 1,397,861,665,344/870,644
6. Step 6: Final answer
   x = 1,605,549.07