Finding the Third Proportional to 528,990 and 1,248,536

Step by Step Solution

1. Step 1: Write the proportion equation
   528,990 : 1,248,536 = 1,248,536 : x
2. Step 2: Convert to fraction form
   528,990/1,248,536 = 1,248,536/x
3. Step 3: Cross multiply
   528,990x = 1,248,536 × 1,248,536
4. Step 4: Simplify right side
   528,990x = 1,558,842,143,296
5. Step 5: Solve for x
   x = 1,558,842,143,296/528,990
6. Step 6: Final answer
   x = 2,946,827.24