Finding the Third Proportional to 646,944 and 997,200

Step by Step Solution

1. Step 1: Write the proportion equation
   646,944 : 997,200 = 997,200 : x
2. Step 2: Convert to fraction form
   646,944/997,200 = 997,200/x
3. Step 3: Cross multiply
   646,944x = 997,200 × 997,200
4. Step 4: Simplify right side
   646,944x = 994,407,840,000
5. Step 5: Solve for x
   x = 994,407,840,000/646,944
6. Step 6: Final answer
   x = 1,537,084.88