Finding the Third Proportional to 415,074 and 622,615.50

Step by Step Solution

1. Step 1: Write the proportion equation
   415,074 : 622,615.50 = 622,615.50 : x
2. Step 2: Convert to fraction form
   415,074/622,615.50 = 622,615.50/x
3. Step 3: Cross multiply
   415,074x = 622,615.50 × 622,615.50
4. Step 4: Simplify right side
   415,074x = 387,650,060,840.25
5. Step 5: Solve for x
   x = 387,650,060,840.25/415,074
6. Step 6: Final answer
   x = 933,930.00