Finding the Third Proportional to 413,458 and 622,606.50

Step by Step Solution

1. Step 1: Write the proportion equation
   413,458 : 622,606.50 = 622,606.50 : x
2. Step 2: Convert to fraction form
   413,458/622,606.50 = 622,606.50/x
3. Step 3: Cross multiply
   413,458x = 622,606.50 × 622,606.50
4. Step 4: Simplify right side
   413,458x = 387,638,853,842.25
5. Step 5: Solve for x
   x = 387,638,853,842.25/413,458
6. Step 6: Final answer
   x = 937,553.16