Finding the Third Proportional to 416,739 and 622,361.50

Step by Step Solution

1. Step 1: Write the proportion equation
   416,739 : 622,361.50 = 622,361.50 : x
2. Step 2: Convert to fraction form
   416,739/622,361.50 = 622,361.50/x
3. Step 3: Cross multiply
   416,739x = 622,361.50 × 622,361.50
4. Step 4: Simplify right side
   416,739x = 387,333,836,682.25
5. Step 5: Solve for x
   x = 387,333,836,682.25/416,739
6. Step 6: Final answer
   x = 929,439.86