Finding the Third Proportional to 264,510 and 402,981.75

Step by Step Solution

1. Step 1: Write the proportion equation
   264,510 : 402,981.75 = 402,981.75 : x
2. Step 2: Convert to fraction form
   264,510/402,981.75 = 402,981.75/x
3. Step 3: Cross multiply
   264,510x = 402,981.75 × 402,981.75
4. Step 4: Simplify right side
   264,510x = 162,394,290,833.06
5. Step 5: Solve for x
   x = 162,394,290,833.06/264,510
6. Step 6: Final answer
   x = 613,943.86