Finding the Third Proportional to 528,988 and 1,248,540

Step by Step Solution

1. Step 1: Write the proportion equation
   528,988 : 1,248,540 = 1,248,540 : x
2. Step 2: Convert to fraction form
   528,988/1,248,540 = 1,248,540/x
3. Step 3: Cross multiply
   528,988x = 1,248,540 × 1,248,540
4. Step 4: Simplify right side
   528,988x = 1,558,852,131,600
5. Step 5: Solve for x
   x = 1,558,852,131,600/528,988
6. Step 6: Final answer
   x = 2,946,857.27