Finding the Third Proportional to 657,164 and 988,662

Step by Step Solution

1. Step 1: Write the proportion equation
   657,164 : 988,662 = 988,662 : x
2. Step 2: Convert to fraction form
   657,164/988,662 = 988,662/x
3. Step 3: Cross multiply
   657,164x = 988,662 × 988,662
4. Step 4: Simplify right side
   657,164x = 977,452,550,244
5. Step 5: Solve for x
   x = 977,452,550,244/657,164
6. Step 6: Final answer
   x = 1,487,379.94