Finding the Third Proportional to 531,710 and 817,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   531,710 : 817,276.50 = 817,276.50 : x
2. Step 2: Convert to fraction form
   531,710/817,276.50 = 817,276.50/x
3. Step 3: Cross multiply
   531,710x = 817,276.50 × 817,276.50
4. Step 4: Simplify right side
   531,710x = 667,940,877,452.25
5. Step 5: Solve for x
   x = 667,940,877,452.25/531,710
6. Step 6: Final answer
   x = 1,256,212.74