Finding the Third Proportional to 653,646 and 1,407,390

Step by Step Solution

1. Step 1: Write the proportion equation
   653,646 : 1,407,390 = 1,407,390 : x
2. Step 2: Convert to fraction form
   653,646/1,407,390 = 1,407,390/x
3. Step 3: Cross multiply
   653,646x = 1,407,390 × 1,407,390
4. Step 4: Simplify right side
   653,646x = 1,980,746,612,100
5. Step 5: Solve for x
   x = 1,980,746,612,100/653,646
6. Step 6: Final answer
   x = 3,030,304.80