Finding the Third Proportional to 583,128 and 1,212,810

Step by Step Solution

1. Step 1: Write the proportion equation
   583,128 : 1,212,810 = 1,212,810 : x
2. Step 2: Convert to fraction form
   583,128/1,212,810 = 1,212,810/x
3. Step 3: Cross multiply
   583,128x = 1,212,810 × 1,212,810
4. Step 4: Simplify right side
   583,128x = 1,470,908,096,100
5. Step 5: Solve for x
   x = 1,470,908,096,100/583,128
6. Step 6: Final answer
   x = 2,522,444.64