Finding the Third Proportional to 840,332 and 1,224,390

Step by Step Solution

1. Step 1: Write the proportion equation
   840,332 : 1,224,390 = 1,224,390 : x
2. Step 2: Convert to fraction form
   840,332/1,224,390 = 1,224,390/x
3. Step 3: Cross multiply
   840,332x = 1,224,390 × 1,224,390
4. Step 4: Simplify right side
   840,332x = 1,499,130,872,100
5. Step 5: Solve for x
   x = 1,499,130,872,100/840,332
6. Step 6: Final answer
   x = 1,783,974.51