Finding the Third Proportional to 417,988 and 626,008

Step by Step Solution

1. Step 1: Write the proportion equation
   417,988 : 626,008 = 626,008 : x
2. Step 2: Convert to fraction form
   417,988/626,008 = 626,008/x
3. Step 3: Cross multiply
   417,988x = 626,008 × 626,008
4. Step 4: Simplify right side
   417,988x = 391,886,016,064
5. Step 5: Solve for x
   x = 391,886,016,064/417,988
6. Step 6: Final answer
   x = 937,553.27