Finding the Third Proportional to 1,118,142 and 1,489,725

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118,142 : 1,489,725 = 1,489,725 : x
2. Step 2: Convert to fraction form
   1,118,142/1,489,725 = 1,489,725/x
3. Step 3: Cross multiply
   1,118,142x = 1,489,725 × 1,489,725
4. Step 4: Simplify right side
   1,118,142x = 2,219,280,575,625
5. Step 5: Solve for x
   x = 2,219,280,575,625/1,118,142
6. Step 6: Final answer
   x = 1,984,793.14