Finding the Third Proportional to 648,852 and 1,387,380

Step by Step Solution

1. Step 1: Write the proportion equation
   648,852 : 1,387,380 = 1,387,380 : x
2. Step 2: Convert to fraction form
   648,852/1,387,380 = 1,387,380/x
3. Step 3: Cross multiply
   648,852x = 1,387,380 × 1,387,380
4. Step 4: Simplify right side
   648,852x = 1,924,823,264,400
5. Step 5: Solve for x
   x = 1,924,823,264,400/648,852
6. Step 6: Final answer
   x = 2,966,505.87