Finding the Third Proportional to 402,156 and 622,127.25

Step by Step Solution

1. Step 1: Write the proportion equation
   402,156 : 622,127.25 = 622,127.25 : x
2. Step 2: Convert to fraction form
   402,156/622,127.25 = 622,127.25/x
3. Step 3: Cross multiply
   402,156x = 622,127.25 × 622,127.25
4. Step 4: Simplify right side
   402,156x = 387,042,315,192.56
5. Step 5: Solve for x
   x = 387,042,315,192.56/402,156
6. Step 6: Final answer
   x = 962,418.35