Finding the Third Proportional to 654,688 and 1,408,980

Step by Step Solution

1. Step 1: Write the proportion equation
   654,688 : 1,408,980 = 1,408,980 : x
2. Step 2: Convert to fraction form
   654,688/1,408,980 = 1,408,980/x
3. Step 3: Cross multiply
   654,688x = 1,408,980 × 1,408,980
4. Step 4: Simplify right side
   654,688x = 1,985,224,640,400
5. Step 5: Solve for x
   x = 1,985,224,640,400/654,688
6. Step 6: Final answer
   x = 3,032,321.72