Finding the Third Proportional to 413,632 and 622,910

Step by Step Solution

1. Step 1: Write the proportion equation
   413,632 : 622,910 = 622,910 : x
2. Step 2: Convert to fraction form
   413,632/622,910 = 622,910/x
3. Step 3: Cross multiply
   413,632x = 622,910 × 622,910
4. Step 4: Simplify right side
   413,632x = 388,016,868,100
5. Step 5: Solve for x
   x = 388,016,868,100/413,632
6. Step 6: Final answer
   x = 938,072.65