Finding the Third Proportional to 763,321 and 1,036,664

Step by Step Solution

1. Step 1: Write the proportion equation
   763,321 : 1,036,664 = 1,036,664 : x
2. Step 2: Convert to fraction form
   763,321/1,036,664 = 1,036,664/x
3. Step 3: Cross multiply
   763,321x = 1,036,664 × 1,036,664
4. Step 4: Simplify right side
   763,321x = 1,074,672,248,896
5. Step 5: Solve for x
   x = 1,074,672,248,896/763,321
6. Step 6: Final answer
   x = 1,407,890.32